VulnSocial

CVE-2026-76839Disclosure

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Grav before 2.0.16 allows sandboxed Twig templates to access sensitive User fields through allow-listed offsetGet() and offsetexists() methods that lack field filtering. Attackers with page-edit permissions can call offsetGet() on User objects to extract hashed passwords and 2FA secrets, enabling offline password cracking and authentication bypass.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-522

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-25: 1Technical Details · 2026-08-25: 108-25
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-76839 Grav Sandbox Escape via User Field Access Exposes Sensitive Data https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-76839

    Post summary

    The text announces CVE-2026-76839, noting a sandbox escape vulnerability in Grav that could expose sensitive data via user field access.

    00000111
    4.1K followersView on X

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