CVE-2026-94283

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.5 from GitHub Security Advisory published 2026-09-28. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-88174 (ENISA EUVD) · GHSA-j5qx-6vm4-vfcj (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 28, 2026

Last Modified

September 30, 2026

Advisory Details (1)

Auto-updated Sep 28, 2026
Patch available.
Web page

Fixes for AISLE reports (!310) · Merge requests · xorg / lib / libX11 · GitLab

https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/310/diffs?commit_id=42d0303f243002a9856c76060569a61893c670dd

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibx11-xcb1 (2:1.8.7-1ubuntu0.1) @ noble2026-10-28ubuntu
redhatlibx11-main-1.8.13-3.1.hum12026-10-08redhat

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libx112:1.8.10-1 ... 2:1.8.7-1 (9 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libx112:1.8.12-1, 2:1.8.13-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libx112:1.8.12-1, 2:1.8.13-1
  • every version on: no fix on record
—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 65× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 92 is merged into the row it repeats.

  1. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  6. 2026-10-28 09:35 UTCEG score recompute
  7. 2026-10-28 09:35 UTCVendor advisory
  8. 2026-10-28 09:35 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  9. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-10-25 13:49 UTCEG score recompute
  13. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  16. 2026-10-22 12:27 UTCEG score recompute
  17. 2026-10-22 12:27 UTCVendor advisory
  18. 2026-10-22 12:27 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  19. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  21. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-10-18 02:58 UTCEG score recompute
  24. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  25. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.2% · 9th percentile
Show 66 more
  1. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-10-12 14:42 UTCEG score recompute
  6. 2026-10-11 19:12 UTCEG score recompute
  7. 2026-10-11 16:27 UTCEG score recompute
  8. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  9. 2026-10-11 13:41 UTCEG score recompute
  10. 2026-10-11 08:51 UTCEG score recompute
  11. 2026-10-11 08:51 UTCVendor advisory
  12. 2026-10-11 08:51 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-10 06:55 UTCEG score recompute
  15. 2026-10-10 06:55 UTCVendor advisory
  16. 2026-10-10 06:55 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  17. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-10-09 05:00 UTCEG score recompute
  19. 2026-10-09 05:00 UTCVendor advisory
  20. 2026-10-09 05:00 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  21. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-10-08 03:04 UTCEG score recompute
  23. 2026-10-08 03:04 UTCVendor advisory
  24. 2026-10-08 03:04 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  26. 2026-10-07 01:08 UTCEG score recompute
  27. 2026-10-07 01:08 UTCVendor advisory
  28. 2026-10-07 01:08 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  29. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  30. 2026-10-05 23:12 UTCEG score recompute
  31. 2026-10-05 23:12 UTCVendor advisory
  32. 2026-10-05 23:12 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  33. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  34. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  35. 2026-10-04 21:13 UTCVendor advisory
  36. 2026-10-04 21:13 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  37. 2026-10-03 19:15 UTCEG score recompute
  38. 2026-10-03 19:15 UTCVendor advisory
  39. 2026-10-03 19:15 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  40. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  41. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  42. 2026-10-02 17:20 UTCEG score recompute
  43. 2026-10-02 17:20 UTCVendor advisory
  44. 2026-10-02 17:20 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  45. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  46. 2026-10-01 15:19 UTCEG score recompute
  47. 2026-10-01 15:19 UTCVendor advisory
  48. 2026-10-01 15:19 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  49. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  50. 2026-09-30 13:24 UTCEG score recompute
  51. 2026-09-30 13:24 UTCVendor advisory
  52. 2026-09-30 13:24 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  53. 2026-09-30 13:00 UTCEG score recompute
  54. 2026-09-30 13:00 UTCVendor advisory
  55. 2026-09-30 12:59 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  56. 2026-09-29 22:12 UTCEG score recompute
  57. 2026-09-29 22:12 UTCVendor advisory
  58. 2026-09-29 22:12 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  59. 2026-09-29 11:27 UTCEG score recompute
  60. 2026-09-29 11:27 UTCVendor advisory
  61. 2026-09-29 11:27 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  62. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  63. 2026-09-28 09:32 UTCEG score recompute
  64. 2026-09-28 09:32 UTCGHSA enrichmentGHSA-j5qx-6vm4-vfcj · GitHub CVSS 6.5
  65. 2026-09-28 08:42 UTCEG score recomputeFirst assessed: 6.5 MEDIUM
  66. 2026-09-28 08:42 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-94283?
CVE-2026-94283 is a medium-severity vulnerability; its CVE record was published on September 28, 2026. An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
When was CVE-2026-94283 made public?
CVE-2026-94283 was made public on September 28, 2026: that is the date its CVE record's CNA, SUSE, gives for when the vulnerability was made public. The CVE record itself was published on September 28, 2026. EchelonGraph's copy of the record carries a last-modified date of September 30, 2026; the record at its source may have been updated since.
Is CVE-2026-94283 actively exploited?
CVE-2026-94283 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-94283?
CVE-2026-94283 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-94283?
A fix for CVE-2026-94283 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-94283 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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