CVE-2026-20889

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-07. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

April 7, 2026

Last Modified

July 15, 2026

Advisory Details (9)

Auto-updated Sep 12, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 6",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20889.json
redhat Patch Available

2455942 – (CVE-2026-20889) CVE-2026-20889 LibRaw: LibRaw: Arbitrary code execution via specially crafted image file

Affected: Red Hat Enterprise Linux 8

https://bugzilla.redhat.com/show_bug.cgi?id=2455942
redhat Patch Available

CVE-2026-20889 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-20889
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2026:14673
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP So

https://access.redhat.com/errata/RHSA-2026:14655
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:14224
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:13284
generic

TALOS-2026-2358 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2358
generic

TALOS-2026-2358 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

https://talosintelligence.com/vulnerability_reports/TALOS-2026-2358

Vendor Advisories for CVE-2026-20889(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatLibRaw-0:0.19.5-3.el8_6.12026-05-07redhat
redhatLibRaw-0:0.19.5-3.el8_8.12026-05-07redhat
redhatLibRaw-0:0.19.5-2.el8_4.12026-05-06redhat
redhatLibRaw-0:0.19.5-6.el8_102026-05-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libraw0.20.2-1, 0.20.2-1+deb11u1, 0.20.2-1+deb11u20.20.2-1+deb11u3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libraw0.20.2-2.1, 0.20.2-2.1+deb12u10.20.2-2.1+deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libraw0.21.4-2 ... 0.22.1-1~exp2 (8 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libraw0.21.4-2 ... 0.22.1-1~exp2 (7 versions)0.22.1-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 28× 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 299 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-20889?
CVE-2026-20889 is a critical vulnerability published on April 7, 2026. A heap-based buffer overflow vulnerability exists in the x3fthumbloader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
When was CVE-2026-20889 disclosed?
CVE-2026-20889 was first published in the National Vulnerability Database on April 7, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20889 actively exploited?
CVE-2026-20889 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 45.3% of all scored CVEs.
What is the CVSS score of CVE-2026-20889?
CVE-2026-20889 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-20889?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20889, 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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