CVE-2026-18359

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM 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(medium)
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 19× in last 7d / 99× 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 162 total refreshes for this CVE.

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

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.

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