CVE-2026-18359

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. 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.

Server-side request forgery in the METS and IIIF import URI handling in Scripta eScriptorium through 26.04.1 allows a remote authenticated user to make the server issue arbitrary HTTP requests to internal hosts, including the cloud instance metadata service, via the mets_uri or iiif_uri parameter of POST /api/documents/{pk}/imports/, because the IMPORT_ALLOWED_DOMAINS setting defaults to '*' and no address filtering, redirect cap or timeout is applied

CVSS v3
8.5
EG Score
8.5(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

Scripta / escriptorium · GitLab

https://gitlab.com/scripta/escriptorium/-/work_items/1230

Vendor Advisories for CVE-2026-18359(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 29× in last 7d / 57× 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. 2026-08-20 08:24 UTCGHSA enrichment
  2. 2026-08-19 19:45 UTCEG score recompute
  3. 2026-08-19 19:45 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 07:05 UTCGHSA enrichment
  6. 2026-08-18 18:25 UTCGHSA enrichment
  7. 2026-08-18 15:06 UTCEG score recompute
  8. 2026-08-18 15:05 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 13:00 UTCGHSA enrichment
  11. 2026-08-18 00:18 UTCEG score recompute
  12. 2026-08-18 00:18 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 11:33 UTCGHSA enrichment
  15. 2026-08-16 22:54 UTCEG score recompute
  16. 2026-08-16 22:54 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 10:14 UTCEG score recompute
  19. 2026-08-16 10:14 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 21:35 UTCGHSA enrichment
  22. 2026-08-15 08:55 UTCEG score recompute
  23. 2026-08-15 08:55 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 20:15 UTCGHSA enrichment
Show 32 more
  1. 2026-08-14 07:36 UTCEG score recompute
  2. 2026-08-14 07:36 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 18:56 UTCGHSA enrichment
  5. 2026-08-13 06:17 UTCGHSA enrichment
  6. 2026-08-12 17:37 UTCEG score recompute
  7. 2026-08-12 17:37 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 04:58 UTCGHSA enrichment
  10. 2026-08-11 16:19 UTCEG score recompute
  11. 2026-08-11 16:19 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 03:39 UTCEG score recompute
  14. 2026-08-11 03:39 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 15:00 UTCGHSA enrichment
  17. 2026-08-10 02:21 UTCEG score recompute
  18. 2026-08-10 02:21 UTCGHSA enrichment
  19. 2026-08-09 13:46 UTCEPSS rescore
  20. 2026-08-09 13:41 UTCGHSA enrichment
  21. 2026-08-09 01:02 UTCEG score recompute
  22. 2026-08-09 01:02 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 12:22 UTCGHSA enrichment
  25. 2026-08-07 23:42 UTCEG score recompute
  26. 2026-08-07 23:42 UTCGHSA enrichment
  27. 2026-08-07 11:02 UTCGHSA enrichment
  28. 2026-08-06 22:22 UTCEG score recompute
  29. 2026-08-06 22:22 UTCGHSA enrichment
  30. 2026-08-06 16:32 UTCEG score recompute
  31. 2026-08-06 15:31 UTCEG score recompute
  32. 2026-08-06 15:31 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18359?
CVE-2026-18359 is a high vulnerability published on August 6, 2026. Server-side request forgery in the METS and IIIF import URI handling in Scripta eScriptorium through 26.04.1 allows a remote authenticated user to make the server issue arbitrary HTTP requests to internal hosts, including the cloud instance metadata service, via the metsuri or iiifuri parameter of…
When was CVE-2026-18359 disclosed?
CVE-2026-18359 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18359 actively exploited?
CVE-2026-18359 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 87.2% of all scored CVEs.
What is the CVSS score of CVE-2026-18359?
CVE-2026-18359 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-18359?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18359, 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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