CVE-2026-113789

LOWNVD 3.33.3
EchelonGraph scoreMEDIUM confidence

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

This low-severity CVE scores 3.3 under NVD CVSS v3. EPSS exploit probability: 0.3% (25th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-107327 (ENISA EUVD) · GHSA-6vvc-x485-93v7 (GitHub Security Advisories)Source: ENISA EUVD

3.3EG
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: 0.3%CVSS: 3.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0.

CVSS v3
3.3
EG Score
3.3LOWmedium confidence
EG Risk
15
EG Risk 15/100

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)
Severity33% × 45%
Impact severity (EG Severity): CVSS 3.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 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
0.3%
EPSS %ILE
25th
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 (3.3): severity, escalated by confirmed exploitation. This CVE's 3.3 is its impact severity (EG Severity), not escalated.

EG Severity
3.3 LOWCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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

October 21, 2026

Last Modified

November 2, 2026

Advisory Details (4)

Auto-updated Oct 22, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
GitHub advisoryMentions a patch (unverified)

Possible long runtimes/large memory usage when retrieving form fields · Advisory · py-pdf/pypdf · GitHub

https://github.com/py-pdf/pypdf/security/advisories/GHSA-6vvc-x485-93v7
GitHub release Patch Available

Version 6.21.0, 2026-10-16

Patch available: py-pdf/pypdf 6.21.0

https://github.com/py-pdf/pypdf/releases/tag/6.21.0
GitHub pull request Patch Available

SEC: Improve performance and limit field work

Patch available: py-pdf/pypdf 6.21.0 (PR #4219 merged 2026-10-16)

https://github.com/py-pdf/pypdf/pull/4219
GitHub commit Patch Available

commit 5ef728f0e16d (py-pdf/pypdf)

Patch available: py-pdf/pypdf 6.21.0 (contains commit 5ef728f0e16d)

https://github.com/py-pdf/pypdf/commit/5ef728f0e16d225c853e89f861ba0a67402fe3f2

Vendor Advisories for CVE-2026-113789(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
pippypdf @ 6.21.0 (fixes < 6.21.0)—ghsa

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

(5 across 4 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
pypdf3.17.4-1 ... 6.9.2-2 (18 versions)
  • every version on: no fix on record
—
pypdf22.12.1-3, 2.12.1-3+deb12u1, 2.12.1-4
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf5.4.0-1 ... 6.9.2-2 (8 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf5.4.0-1, 6.19.0-1, 6.9.0-1, 6.9.2-1, 6.9.2-2
  • every version up to 6.21.0-1: fixed in 6.21.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
pypdf1.0 ... 6.9.2 (122 versions)
  • every version up to 6.21.0: fixed in 6.21.0
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 29× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  2. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  4. 2026-11-11 08:25 UTCEchelonGraph re-scored
  5. 2026-11-11 08:25 UTCGHSA enrichmentGHSA-6vvc-x485-93v7 · GitHub severity MODERATE
  6. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  8. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  10. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  11. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  12. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  13. 2026-11-04 02:17 UTCEchelonGraph re-scored
  14. 2026-11-04 02:17 UTCGHSA enrichmentGHSA-6vvc-x485-93v7 · GitHub severity MODERATE
  15. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  16. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  17. 2026-11-02 16:28 UTCEchelonGraph re-scored▼ 2.70
  18. 2026-11-02 16:28 UTCGHSA enrichmentGHSA-6vvc-x485-93v7 · GitHub severity MODERATE
  19. 2026-11-02 16:26 UTCNVD updateCVSS v3 → 3.3 · severity → LOW
  20. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  21. 2026-11-01 07:59 UTCGHSA enrichmentGHSA-6vvc-x485-93v7 · GitHub severity MODERATE
  22. 2026-11-01 07:59 UTCEchelonGraph re-scored
  23. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  24. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
Show 14 more
  1. 2026-10-28 17:28 UTCEchelonGraph re-scored
  2. 2026-10-28 16:51 UTCEchelonGraph re-scored
  3. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-25 14:51 UTCEchelonGraph re-scored
  8. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  10. 2026-10-22 17:09 UTCEchelonGraph re-scored
  11. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  12. 2026-10-21 16:31 UTCEchelonGraph re-scored
  13. 2026-10-21 15:51 UTCEchelonGraph re-scoredFirst assessed: 6.0 MEDIUM
  14. 2026-10-21 15:50 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-113789?
CVE-2026-113789 is a low-severity vulnerability; its CVE record was published on October 21, 2026. pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0.
When was the CVE record for CVE-2026-113789 published?
The CVE record for CVE-2026-113789 was published on October 21, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 2, 2026; the record at its source may have been updated since.
Is CVE-2026-113789 actively exploited?
CVE-2026-113789 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-113789?
CVE-2026-113789 has a CVSS v3 base score of 3.3 (NVD).
How do I remediate CVE-2026-113789?
A fix for CVE-2026-113789 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-113789 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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