CVE-2026-10513

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM 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 — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 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(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity72% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
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 8× in last 7d / 64× 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.

Showing the most recent 100 of 195 total refreshes for this CVE.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-10 09:34 UTCEPSS rescore
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 14:35 UTCEG score recompute
  7. 2026-09-06 14:35 UTCGHSA enrichment
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:11 UTCEPSS rescore
  11. 2026-09-01 13:53 UTCEPSS rescore
  12. 2026-09-01 04:39 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 18:01 UTCEG score recompute
  15. 2026-08-30 18:01 UTCGHSA enrichment
  16. 2026-08-30 01:21 UTCEPSS rescore
  17. 2026-08-28 21:40 UTCEPSS rescore
  18. 2026-08-27 22:40 UTCEG score recompute
  19. 2026-08-27 22:40 UTCGHSA enrichment
  20. 2026-08-27 14:24 UTCEPSS rescore
  21. 2026-08-25 13:48 UTCEPSS rescore
  22. 2026-08-24 23:55 UTCEG score recompute
  23. 2026-08-24 23:55 UTCGHSA enrichment
  24. 2026-08-24 11:39 UTCEG score recompute
  25. 2026-08-24 11:39 UTCGHSA enrichment
Show 75 more
  1. 2026-08-23 21:06 UTCGHSA enrichment
  2. 2026-08-23 08:52 UTCEG score recompute
  3. 2026-08-23 08:52 UTCGHSA enrichment
  4. 2026-08-23 00:19 UTCEPSS rescore
  5. 2026-08-22 20:35 UTCGHSA enrichment
  6. 2026-08-22 08:20 UTCEG score recompute
  7. 2026-08-22 08:20 UTCGHSA enrichment
  8. 2026-08-21 23:48 UTCEPSS rescore
  9. 2026-08-21 18:14 UTCGHSA enrichment
  10. 2026-08-21 05:59 UTCEG score recompute
  11. 2026-08-21 05:59 UTCGHSA enrichment
  12. 2026-08-20 22:55 UTCEPSS rescore
  13. 2026-08-20 17:44 UTCGHSA enrichment
  14. 2026-08-20 05:29 UTCEG score recompute
  15. 2026-08-20 05:29 UTCGHSA enrichment
  16. 2026-08-19 17:03 UTCEPSS rescore
  17. 2026-08-19 11:28 UTCGHSA enrichment
  18. 2026-08-18 23:00 UTCEG score recompute
  19. 2026-08-18 23:00 UTCGHSA enrichment
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-18 00:01 UTCEG score recompute
  22. 2026-08-18 00:01 UTCGHSA enrichment
  23. 2026-08-17 10:18 UTCGHSA enrichment
  24. 2026-08-16 22:04 UTCEG score recompute
  25. 2026-08-16 22:04 UTCGHSA enrichment
  26. 2026-08-16 14:56 UTCEPSS rescore
  27. 2026-08-16 09:49 UTCEG score recompute
  28. 2026-08-16 09:49 UTCGHSA enrichment
  29. 2026-08-16 02:14 UTCEPSS rescore
  30. 2026-08-15 21:35 UTCGHSA enrichment
  31. 2026-08-15 09:20 UTCEG score recompute
  32. 2026-08-15 09:20 UTCGHSA enrichment
  33. 2026-08-15 01:30 UTCEPSS rescore
  34. 2026-08-14 21:05 UTCGHSA enrichment
  35. 2026-08-14 08:51 UTCEG score recompute
  36. 2026-08-14 08:51 UTCGHSA enrichment
  37. 2026-08-13 22:00 UTCEPSS rescore
  38. 2026-08-13 20:36 UTCGHSA enrichment
  39. 2026-08-13 08:21 UTCGHSA enrichment
  40. 2026-08-12 20:07 UTCEG score recompute
  41. 2026-08-12 20:07 UTCGHSA enrichment
  42. 2026-08-12 13:50 UTCEPSS rescore
  43. 2026-08-12 07:53 UTCGHSA enrichment
  44. 2026-08-11 19:39 UTCEG score recompute
  45. 2026-08-11 19:38 UTCGHSA enrichment
  46. 2026-08-11 13:42 UTCEPSS rescore
  47. 2026-08-11 07:20 UTCEG score recompute
  48. 2026-08-11 07:20 UTCGHSA enrichment
  49. 2026-08-10 23:59 UTCEPSS rescore
  50. 2026-08-10 19:05 UTCGHSA enrichment
  51. 2026-08-10 06:50 UTCGHSA enrichment
  52. 2026-08-09 18:36 UTCEG score recompute
  53. 2026-08-09 18:36 UTCGHSA enrichment
  54. 2026-08-09 13:46 UTCEPSS rescore
  55. 2026-08-09 06:22 UTCGHSA enrichment
  56. 2026-08-08 18:08 UTCEG score recompute
  57. 2026-08-08 18:08 UTCGHSA enrichment
  58. 2026-08-08 16:37 UTCEPSS rescore
  59. 2026-08-08 05:53 UTCGHSA enrichment
  60. 2026-08-07 17:39 UTCEG score recompute
  61. 2026-08-07 17:39 UTCGHSA enrichment
  62. 2026-08-07 05:24 UTCGHSA enrichment
  63. 2026-08-06 17:07 UTCEG score recompute
  64. 2026-08-06 17:07 UTCGHSA enrichment
  65. 2026-08-06 13:46 UTCEPSS rescore
  66. 2026-08-06 04:53 UTCEG score recompute
  67. 2026-08-06 04:53 UTCGHSA enrichment
  68. 2026-08-05 19:17 UTCEPSS rescore
  69. 2026-08-05 16:38 UTCGHSA enrichment
  70. 2026-08-05 02:56 UTCEG score recompute
  71. 2026-08-05 02:56 UTCGHSA enrichment
  72. 2026-08-04 15:09 UTCEPSS rescore
  73. 2026-08-04 14:42 UTCEG score recompute
  74. 2026-08-04 14:42 UTCGHSA enrichment
  75. 2026-08-04 10:38 UTCEPSS rescore

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 0% probability of exploitation in the next 30 days, which ranks it in the top 65.9% of all scored CVEs.
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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