CVE-2026-8829 Vulnerability Analysis & Exploit Details

CVE-2026-8829
Vulnerability Scoring

7.5
/10
Very High Risk

Highly exploitable, CVE-2026-8829 poses a critical security risk that could lead to severe breaches.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-8829 Details

Status: Modified

Last updated: 🕗 22 Jul 2026, 20:10 UTC
Originally published on: 🕒 04 Jun 2026, 03:16 UTC

Time between publication and last update: 48 days

CVSS Release: version 3

CVSS3 Source

134c704f-9b21-4f2e-91b3-4a467353bcc0

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVE-2026-8829 Vulnerability Summary

CVE-2026-8829: HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation. The read may disclose adjacent heap contents into the destination SV.

Assessing the Risk of CVE-2026-8829

Access Complexity Graph

The exploitability of CVE-2026-8829 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-8829

With low attack complexity and no required privileges, CVE-2026-8829 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-8829, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-8829, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-8829 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2026-8829 poses no threat to data integrity.
  • Availability: None
    CVE-2026-8829 does not impact system availability.

CVE-2026-8829 References

External References

CWE Common Weakness Enumeration

CWE-416

Vulnerable Configurations

  • cpe:2.3:a:oalders:html\:\:entities:2.14:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.14:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.16:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.16:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.17:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.17:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.18:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.18:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.19:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.19:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.20:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.20:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.21:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.21:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.22:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.22:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.23:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.23:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.24:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.24:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.25:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.25:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:2.99:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:2.99:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.00:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.00:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.01:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.01:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.02:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.02:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.03:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.03:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.04:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.04:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.05:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.05:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.06:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.06:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.07:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.07:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.08:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.08:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.09:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.09:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.10:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.10:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.11:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.11:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.12:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.12:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.13:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.13:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.14:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.14:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.15:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.15:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.16:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.16:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.17:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.17:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.18:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.18:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.19:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.19:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.20:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.20:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.21:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.21:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.22:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.22:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.23:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.23:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.24:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.24:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.25:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.25:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.26:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.26:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.27:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.27:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.28:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.28:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.29:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.29:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.30:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.30:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.31:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.31:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.32:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.32:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.33:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.33:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.34:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.34:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.35:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.35:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.36:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.36:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.37:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.37:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.38:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.38:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.39:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.39:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.40:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.40:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.41:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.41:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.42:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.42:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.43:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.43:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.44:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.44:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.45:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.45:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.46:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.46:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.47:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.47:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.48:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.48:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.49:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.49:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.50:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.50:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.51:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.51:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.52:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.52:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.53:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.53:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.54:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.54:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.55:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.55:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.56:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.56:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.57:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.57:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.58:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.58:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.59:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.59:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.60:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.60:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.61:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.61:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.62:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.62:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.63:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.63:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.64:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.64:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.65:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.65:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.66:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.66:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.67:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.67:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.68:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.68:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.69:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.69:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.70:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.70:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.71:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.71:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.72:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.72:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.73:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.73:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.74:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.74:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.75:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.75:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.76:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.76:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.77:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.77:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.78:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.78:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.79:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.79:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.80:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.80:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.81:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.81:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.82:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.82:*:*:*:*:perl:*:*
  • cpe:2.3:a:oalders:html\:\:entities:3.83:*:*:*:*:perl:*:*
    cpe:2.3:a:oalders:html\:\:entities:3.83:*:*:*:*:perl:*:*

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  • CVE-2026-61246 – Vulnerability in the Oracle Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported ver...