VulnSocial

CVE-2026-12281Disclosure

LOWCVSS 8.1 · HIGH

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

The Shibboleth WordPress plugin before 2.5.4 does not fail closed when its HTTP header identity mode is enabled without an anti-spoofing key, treating any request that carries identity headers as an authenticated session without verifying them. On a deployment where untrusted client headers reach the application, an unauthenticated attacker can log in with forged identity headers and, when automatic account creation and the default administrator role mapping are enabled, create and sign in as a new administrator. Exploitation requires the non-default HTTP header attribute mode, an empty or absent spoof key, automatic account creation enabled, and a deployment that does not strip untrusted client headers before they reach the application.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-287

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • 3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-07-15: 3Patch / Workaround · 2026-07-15: 1Technical Details · 2026-07-15: 307-15
Signal classification2 categories
Disclosure
266.7%
Patch
133.3%
Referenced assets3 URLs
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-12281 The Shibboleth WordPress plugin before 2.5.4 does not fail closed when its HTTP header identity mode is enabled without an anti-spoofing key, treating any request tha… https://www.cve.org/CVERecord?id=CVE-2026-12281 ----- Traducción: CVE-2026-12281 El … http://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑12281, noting that the Shibboleth WordPress plugin does not enforce a closed state when anti‑spoofing is missing, but offers no PoC, exploit, patch, or active‑exploitation details.

    0000033
    92 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-12281 The Shibboleth WordPress plugin before 2.5.4 does not fail closed when its HTTP header identity mode is enabled without an anti-spoofing key, treating any request tha… https://www.cve.org/CVERecord?id=CVE-2026-12281

    Post summary

    The CVE describes an authentication bypass in the Shibboleth WordPress plugin before version 2.5.4, which is addressed by upgrading to the patched release.

    00000588
    57.8K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-12281 Authentication Bypass in Shibboleth WordPress Plugin Before 2.5.4 via Forged Headers https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12281

    Post summary

    The post announces CVE-2026-12281 as an authentication bypass vulnerability in the Shibboleth WordPress plugin, noting it can be triggered by forged headers. No information on patches, PoCs, or active exploitation is provided.

    0000095
    4.1K followersView on X

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