CVE Explorer

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 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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fb9b56ba62f79e4dc1c897e51d34b6f07dbc3e0c411b4aa5431401d3b1e1778d

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Webmention","vendor":"pfefferle","versions":[{"lessThanOrEqual":"5.6.2","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions

{"url":"https://github.com/pfefferle/wordpress-webmention/blob/057223cee18a9e93b017d0f21db6ea77a7686489/includes/handler/class-mf2.php#L878"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/references/1

{"url":"https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/class-receiver.php#L260"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/references/3

{"url":"https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/handler/class-mf2.php#L877"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/references/2

{"url":"https://plugins.trac.wordpress.org/changeset/3494831/webmention"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/references/4

{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/08d15c46-d15f-4803-80be-90bf33335c18?source=cve"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e79f71ceeb071ec206addaa0ea5951529830478d34244f6e7028424aa04f55c · sha256:569f402f2603910d… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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