CVE-2026-10513

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-30. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the unauthenticated webmention REST endpoint and rendered directly into HTML 'value' attributes by the edit-comment-form template without esc_attr() or esc_url(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a privileged user (moderator or administrator) opens the affected comment edit screen.

CVSS v3
7.2
EG Score
7.2(high)
EPSS
14.6%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 1, 2026

References (4)

Vendor Advisories for CVE-2026-10513(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 33× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 23:34 UTCEG score recompute
  2. 2026-07-06 23:34 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 11:19 UTCEG score recompute
  5. 2026-07-06 11:19 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 23:03 UTCEG score recompute
  8. 2026-07-05 23:03 UTCGHSA enrichment
  9. 2026-07-05 10:48 UTCEG score recompute
  10. 2026-07-05 10:48 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 22:33 UTCEG score recompute
  14. 2026-07-04 22:33 UTCGHSA enrichment
  15. 2026-07-04 10:18 UTCEG score recompute
  16. 2026-07-04 10:18 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-03 22:01 UTCEG score recompute
  19. 2026-07-03 22:01 UTCGHSA enrichment
  20. 2026-07-03 09:47 UTCEG score recompute
  21. 2026-07-03 09:47 UTCGHSA enrichment
  22. 2026-07-02 21:32 UTCEG score recompute
  23. 2026-07-02 21:32 UTCGHSA enrichment
  24. 2026-07-02 09:18 UTCEG score recompute
  25. 2026-07-02 09:18 UTCGHSA enrichment
Show 8 more
  1. 2026-07-01 21:04 UTCEG score recompute
  2. 2026-07-01 21:04 UTCGHSA enrichment
  3. 2026-07-01 15:06 UTCEPSS rescore
  4. 2026-07-01 15:06 UTCEPSS rescore
  5. 2026-07-01 08:50 UTCEG score recompute
  6. 2026-07-01 08:50 UTCGHSA enrichment
  7. 2026-06-30 20:36 UTCEG score recompute
  8. 2026-06-30 20:33 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-10513?
CVE-2026-10513 is a high vulnerability published on June 30, 2026. The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the…
When was CVE-2026-10513 disclosed?
CVE-2026-10513 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10513 actively exploited?
CVE-2026-10513 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-10513?
CVE-2026-10513 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-10513?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10513, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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