VulnSocial

CVE-2026-0686Disclosure

LOWCVSS 7.2 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 in the 'MF2::parse_authorpage' function via the 'Receiver::post' function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

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1.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Public PoC is present in monitored signal
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-02); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-02: 1Mentions · 2026-04-08: 1PoC Mentioned / Linked · 2026-04-08: 1Technical Details · 2026-04-02: 1Technical Details · 2026-04-08: 104-0204-08
Signal classification2 categories
Disclosure
150.0%
PoC
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-021
Disclosure1
2026-04-081
PoC1
Full discourse2 posts
  • Atomic Edge@atomicedgeWAF
    PoC

    https://atomicedge.io/cve-proof/cve-2026-0686-webmention-version-5-6-2-high-vulnerability-proof-of-concept CVE-2026-0686 #WordPress plugin #vulnerability webmention #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecurity #atomicedge

    Post summary

    The tweet links to a proof‑of‑concept for CVE‑2026‑0686 targeting the webmention plugin, providing basic vulnerability info but no active exploitation, patches, or detailed exploit code.

    0000031
    6 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-0686 The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 in the 'MF2::parse_authorpage' function via… https://www.cve.org/CVERecord?id=CVE-2026-0686

    Post summary

    This entry announces a Server‑Side Request Forgery vulnerability in the WordPress Webmention plugin (CVE‑2026‑0686) with technical details and a link to the official CVE record.

    0000092
    56.9K followersView on X

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