CVE-2026-93313

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-09-18. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
Trending — 5 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

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

A vulnerability was found in Freedesktop Poppler 26.07.0. The impacted element is the function JBIG2Stream::readCodeTableSeg of the file poppler/JBIG2Stream.cc. Performing a manipulation results in integer overflow. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named eb87cf711563894649bd0c365baa479401dc6d51. To fix this issue, it is recommended to deploy a patch.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

Advisory Details (4)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

Fix integer overflow in JBIG2Stream::readCodeTableSeg (eb87cf71) · Commits · poppler / poppler · GitLab

https://gitlab.freedesktop.org/poppler/poppler/-/commit/eb87cf711563894649bd0c365baa479401dc6d51?merge_request_iid=2322
generic

cve_summit/Signed-integer-overflow-in-JBIG2Stream-readCodeTableSeg-JBIG2Stream.cc-4118.md at main · r1ck9-2q/cve_summit · GitHub

https://github.com/r1ck9-2q/cve_summit/blob/main/Signed-integer-overflow-in-JBIG2Stream-readCodeTableSeg-JBIG2Stream.cc-4118.md
generic

Fix integer overflow in JBIG2Stream::readCodeTableSeg (!2322) · Merge requests · poppler / poppler · GitLab

https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2322
generic

Signed integer overflow in JBIG2 Huffman code table parsing with attacker-controlled values (#1760) · Issues · poppler / poppler · GitLab

https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1760

Vendor Advisories for CVE-2026-93313(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 13:39 UTCGHSA enrichment
  3. 2026-09-18 13:22 UTCEG score recompute
  4. 2026-09-18 13:22 UTCGHSA enrichment
  5. 2026-09-18 13:21 UTCNVD updateCVSS v4 → 2.1
  6. 2026-09-18 13:05 UTCEG score recompute
  7. 2026-09-18 13:05 UTCGHSA enrichment
  8. 2026-09-18 13:04 UTCMITRE cvelistV5CVSS v4 → 5.3
  9. 2026-09-18 02:32 UTCEG score recompute
  10. 2026-09-18 02:31 UTCNVD updateCVSS v4 → 2.1
  11. 2026-09-18 01:34 UTCEG score recompute
  12. 2026-09-18 01:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-93313?
CVE-2026-93313 is a medium vulnerability published on September 18, 2026. A vulnerability was found in Freedesktop Poppler 26.07.0. The impacted element is the function JBIG2Stream::readCodeTableSeg of the file poppler/JBIG2Stream.cc. Performing a manipulation results in integer overflow. The attack can be initiated remotely. The exploit has been made public and could be…
When was CVE-2026-93313 disclosed?
CVE-2026-93313 was first published in the National Vulnerability Database on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93313 actively exploited?
CVE-2026-93313 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 83.6% of all scored CVEs.
What is the CVSS score of CVE-2026-93313?
CVE-2026-93313 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-93313?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93313, 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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