CVE-2026-54633

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.9Exploit: None knownExposed: 0

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

PoDoFo is a C++17 PDF manipulation library. From version 1.0.0 until 1.1.1, processing a crafted PDF with an Indexed color-space image can cause a heap out-of-bounds read in PdfColorSpaceFilterIndexed::FetchScanLine in src/podofo/main/PdfColorSpaceFilter.cpp. PODOFO_INVARIANT does not perform a runtime check, so a pixel index greater than or equal to m_MapSize can address beyond m_lookup. PdfColorSpaceFilterFactory::TryCreateFromObject also validates hival with an incorrect conjunction and no upper bound, allowing malformed Indexed color-space metadata outside the expected range. The resulting read can disclose adjacent heap data or crash the processing application. This issue is fixed in version 1.1.1.

CVSS v3
6.9
EG Score
6.9(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity69% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Sep 17, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

Version 1.1.1

Patch available: podofo/podofo 1.1.1

https://github.com/podofo/podofo/releases/tag/1.1.1
github_commit Patch Available

commit 999c519d285c (podofo/podofo)

Patch available: podofo/podofo 1.1.1 (contains commit 999c519d285c)

https://github.com/podofo/podofo/commit/999c519d285c4a65eba48409d9cd2da9d4743cca
github Patch Available

Heap Out-of-Bounds Read in Indexed Color Space Image Decoding (FetchScanLine) · Advisory · podofo/podofo · GitHub

https://github.com/podofo/podofo/security/advisories/GHSA-f3j2-7846-h5gg

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 15× 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. 2026-09-24 21:24 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-24 04:43 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 03:36 UTCEG score recompute
  6. 2026-09-22 02:30 UTCEG score recompute
  7. 2026-09-22 02:01 UTCEG score recompute
  8. 2026-09-21 01:45 UTCEG score recompute
  9. 2026-09-20 20:16 UTCEPSS rescore
  10. 2026-09-20 00:38 UTCEG score recompute
  11. 2026-09-18 23:31 UTCEG score recompute
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-17 22:24 UTCEG score recompute
  14. 2026-09-17 21:44 UTCEG score recompute
  15. 2026-09-17 21:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54633?
CVE-2026-54633 is a medium vulnerability published on September 17, 2026. PoDoFo is a C++17 PDF manipulation library. From version 1.0.0 until 1.1.1, processing a crafted PDF with an Indexed color-space image can cause a heap out-of-bounds read in PdfColorSpaceFilterIndexed::FetchScanLine in src/podofo/main/PdfColorSpaceFilter.cpp. PODOFOINVARIANT does not perform a…
When was CVE-2026-54633 disclosed?
CVE-2026-54633 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54633 actively exploited?
CVE-2026-54633 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 93.3% of all scored CVEs.
What is the CVSS score of CVE-2026-54633?
CVE-2026-54633 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-54633?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54633, 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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