CVE-2026-12517

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated site-info endpoint before fetching it, allowing anonymous users (the gating nonce is exposed on public pages carrying an embed) to make the site request internal and private-network URLs and read back the parsed page metadata. This is a Server-Side Request Forgery.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Fediverse Embeds < 1.5.8 – Unauthenticated SSRF via Site Info Endpoint | CVE 2026-12517 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/460a996f-e27d-47e8-9d68-9e6be93100c0/

Vendor Advisories for CVE-2026-12517(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 73× 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 114 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-12517?
CVE-2026-12517 is a medium vulnerability published on July 9, 2026. The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated site-info endpoint before fetching it, allowing anonymous users (the gating nonce is exposed on public pages carrying an embed) to make the site request…
When was CVE-2026-12517 disclosed?
CVE-2026-12517 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12517 actively exploited?
CVE-2026-12517 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 76.5% of all scored CVEs.
What is the CVSS score of CVE-2026-12517?
CVE-2026-12517 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-12517?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12517, 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.

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