pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.
CVE-2026-102993
HIGHNVD 7.57.5—Trending — 4 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4% (26th percentile of EPSS-scored CVEs). 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, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 34EG Risk 34/100CISA 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 computedSeverity75% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.4%
- EPSS %ILE
- 26th
- KEV
- Not listed
CISA SSVCTrack 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). 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 30, 2026
Last Modified
October 2, 2026
Advisory Details (4)
Auto-updated Sep 30, 2026Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available
Possible large memory usage when retrieving Roman page labels · Advisory · py-pdf/pypdf · GitHub
https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285github_release Patch Available
Version 6.17.0, 2026-09-04
Patch available: py-pdf/pypdf 6.17.0
https://github.com/py-pdf/pypdf/releases/tag/6.17.0github_pr Patch Available
SEC: Limit value for Roman numerals
Patch available: py-pdf/pypdf 6.17.0 (PR #4047 merged 2026-09-04)
https://github.com/py-pdf/pypdf/pull/4047github_commit Patch Available
commit 89db7c4fe931 (py-pdf/pypdf)
Patch available: py-pdf/pypdf 6.17.0 (contains commit 89db7c4fe931)
https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163Vendor Advisories for CVE-2026-102993(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| pypdf | 1.0 ... 6.9.2 (116 versions) | 6.17.0 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 10× 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.
- 2026-10-03 18:32 UTCEG score recompute
- 2026-10-03 14:25 UTCEPSS rescore
- 2026-10-02 16:45 UTCEG score recompute
- 2026-10-02 16:28 UTCEG score recompute▼ 1.20
- 2026-10-02 16:25 UTCNVD updateCVSS v3 → 7.5
- 2026-10-02 03:35 UTCEG score recompute
- 2026-10-01 19:49 UTCEPSS rescore
- 2026-09-30 20:22 UTCEG score recompute
- 2026-09-30 20:05 UTCEG score recompute
- 2026-09-30 20:05 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Same product
10 shownPyPI:pypdf
Frequently asked(5)
What is CVE-2026-102993?
CVE-2026-102993 is a high vulnerability published on September 30, 2026. pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/pagelabels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of…
When was CVE-2026-102993 disclosed?
CVE-2026-102993 was first published on September 30, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-102993 actively exploited?
CVE-2026-102993 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102993?
CVE-2026-102993 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-102993?
A fix for CVE-2026-102993 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-102993 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-102993
Is Your Infrastructure Affected by CVE-2026-102993?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.