CVE-2026-18090

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-09. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.1Exploit: None knownExposed services: Not assessed

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

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

CVSS v3
6.1
EG Score
6.1MEDIUMhigh confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 8, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 8, 2026
No patch confirmed yet. Sources: redhat.
generic

(CVE-2026-18090) Heap out-of-bounds read in `uncompress()` in `gdk-pixbuf/io-icns.c` (#308) · Issues · GNOME / gdk-pixbuf · GitLab

https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/308
redhat

2517751 – (CVE-2026-18090) CVE-2026-18090 gdk-pixbuf: CVE-2026-18090 gdk-pixbuf: heap out-of-bounds read in uncompress() via crafted ICNS RLE block

https://bugzilla.redhat.com/show_bug.cgi?id=2517751

Vendor Advisories for CVE-2026-18090(2)

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 26× in last 7d / 86× 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. 2026-10-04 05:19 UTCEG score recompute
  2. 2026-10-04 05:19 UTCVendor advisory
  3. 2026-10-04 05:19 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 04:33 UTCEG score recompute
  6. 2026-10-03 04:33 UTCVendor advisory
  7. 2026-10-03 04:33 UTCGHSA enrichment
  8. 2026-10-02 03:47 UTCEG score recompute
  9. 2026-10-02 03:47 UTCVendor advisory
  10. 2026-10-02 03:47 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 03:00 UTCEG score recompute
  13. 2026-10-01 03:00 UTCVendor advisory
  14. 2026-10-01 03:00 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 02:12 UTCEG score recompute
  17. 2026-09-30 02:12 UTCVendor advisory
  18. 2026-09-30 02:12 UTCGHSA enrichment
  19. 2026-09-29 15:20 UTCEPSS rescore
  20. 2026-09-29 01:15 UTCEG score recompute
  21. 2026-09-29 01:15 UTCVendor advisory
  22. 2026-09-29 01:15 UTCGHSA enrichment
  23. 2026-09-28 13:51 UTCEPSS rescore
  24. 2026-09-28 00:29 UTCEG score recompute
  25. 2026-09-28 00:29 UTCVendor advisory
Show 61 more
  1. 2026-09-28 00:29 UTCGHSA enrichment
  2. 2026-09-27 13:47 UTCEPSS rescore
  3. 2026-09-26 23:43 UTCEG score recompute
  4. 2026-09-26 23:43 UTCVendor advisory
  5. 2026-09-26 23:43 UTCGHSA enrichment
  6. 2026-09-26 15:58 UTCEPSS rescore
  7. 2026-09-25 22:51 UTCVendor advisory
  8. 2026-09-25 22:50 UTCGHSA enrichment
  9. 2026-09-24 21:49 UTCEG score recompute
  10. 2026-09-24 21:49 UTCVendor advisory
  11. 2026-09-24 21:49 UTCGHSA enrichment
  12. 2026-09-23 20:36 UTCEG score recompute
  13. 2026-09-23 20:36 UTCVendor advisory
  14. 2026-09-23 20:36 UTCGHSA enrichment
  15. 2026-09-22 19:49 UTCEG score recompute
  16. 2026-09-22 19:49 UTCVendor advisory
  17. 2026-09-22 19:49 UTCGHSA enrichment
  18. 2026-09-21 19:03 UTCEG score recompute
  19. 2026-09-21 19:03 UTCVendor advisory
  20. 2026-09-21 19:03 UTCGHSA enrichment
  21. 2026-09-20 18:16 UTCVendor advisory
  22. 2026-09-20 18:16 UTCGHSA enrichment
  23. 2026-09-19 17:30 UTCEG score recompute
  24. 2026-09-19 17:30 UTCVendor advisory
  25. 2026-09-19 17:30 UTCGHSA enrichment
  26. 2026-09-18 19:27 UTCEPSS rescore
  27. 2026-09-18 16:44 UTCEG score recompute
  28. 2026-09-18 16:44 UTCVendor advisory
  29. 2026-09-18 16:44 UTCGHSA enrichment
  30. 2026-09-17 15:57 UTCVendor advisory
  31. 2026-09-17 15:57 UTCGHSA enrichment
  32. 2026-09-16 15:11 UTCEG score recompute
  33. 2026-09-16 15:11 UTCVendor advisory
  34. 2026-09-16 15:11 UTCGHSA enrichment
  35. 2026-09-16 14:07 UTCEPSS rescore
  36. 2026-09-16 05:14 UTCEPSS rescore
  37. 2026-09-15 14:24 UTCEG score recompute
  38. 2026-09-15 14:24 UTCVendor advisory
  39. 2026-09-15 14:24 UTCGHSA enrichment
  40. 2026-09-14 13:37 UTCEG score recompute
  41. 2026-09-14 13:37 UTCGHSA enrichment
  42. 2026-09-14 12:33 UTCEG score recompute
  43. 2026-09-14 12:33 UTCGHSA enrichment
  44. 2026-09-13 19:07 UTCEG score recompute
  45. 2026-09-13 19:07 UTCGHSA enrichment
  46. 2026-09-13 16:46 UTCEPSS rescore
  47. 2026-09-12 18:21 UTCEG score recompute
  48. 2026-09-12 18:21 UTCGHSA enrichment
  49. 2026-09-12 15:00 UTCEPSS rescore
  50. 2026-09-11 17:34 UTCEG score recompute
  51. 2026-09-11 17:34 UTCGHSA enrichment
  52. 2026-09-11 14:52 UTCEPSS rescore
  53. 2026-09-11 09:36 UTCEPSS rescore
  54. 2026-09-10 16:48 UTCEG score recompute
  55. 2026-09-10 16:48 UTCGHSA enrichment
  56. 2026-09-10 09:34 UTCEPSS rescore
  57. 2026-09-09 16:02 UTCEG score recompute
  58. 2026-09-09 16:02 UTCGHSA enrichment
  59. 2026-09-08 23:20 UTCEG score recompute
  60. 2026-09-08 23:13 UTCEG score recompute
  61. 2026-09-08 23:13 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18090?
CVE-2026-18090 is a medium vulnerability published on September 8, 2026. A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during…
When was CVE-2026-18090 disclosed?
CVE-2026-18090 was first published on September 8, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18090 actively exploited?
CVE-2026-18090 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18090?
CVE-2026-18090 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18090?
No fix for CVE-2026-18090 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-18090 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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