CVE-2026-73629

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-13. a secondary CVSS source baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

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

Serendipity before 2.6.0 contains a server-side request forgery vulnerability in the serendipity_url_allowed() filter that fails to block hex-encoded IPv4 addresses, IPv6 literals, and link-local ranges. Authenticated users with adminImagesAdd permission can bypass the filter using alternate address formats to request internal services and retrieve response bodies through the public uploads directory.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 13, 2026

Last Modified

September 9, 2026

Advisory Details (2)

Auto-updated Aug 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Serendipity before 2.6.0 SSRF via hex IPv4 and IPv6 addresses | Advisories | VulnCheck

https://www.vulncheck.com/advisories/serendipity-before-ssrf-via-hex-ipv4-and-ipv6-addresses
github Patch Available🟡 PoC Available

SSRF in Serendipity media URL import: filter bypassed via hex IPv4, IPv6, and link-local addresses · Advisory · s9y/Serendipity · GitHub

https://github.com/s9y/Serendipity/security/advisories/GHSA-2m48-gjj5-5x86

Vendor Advisories for CVE-2026-73629(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 24× in last 7d / 104× 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 142 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73629?
CVE-2026-73629 is a high vulnerability published on August 13, 2026. Serendipity before 2.6.0 contains a server-side request forgery vulnerability in the serendipityurlallowed() filter that fails to block hex-encoded IPv4 addresses, IPv6 literals, and link-local ranges. Authenticated users with adminImagesAdd permission can bypass the filter using alternate address…
When was CVE-2026-73629 disclosed?
CVE-2026-73629 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73629 actively exploited?
CVE-2026-73629 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 91.3% of all scored CVEs.
What is the CVSS score of CVE-2026-73629?
CVE-2026-73629 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-73629?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73629, 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

Explore the affected products and dependency analysis for CVE-2026-73629

Explore →

Is Your Infrastructure Affected by CVE-2026-73629?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs