CVE-2026-54081Network attack vector

Service interruption via unbounded PostScript execution

Published Jul 29, 2026 · Updated Jul 29, 2026

Denial of service in veraPDF-parser before 1.30.2 and 1.31.1 through 1.31.22 allows remote attackers to abort PDF validation. Type1FontProgram dispatches attacker-controlled Type 1 font tokens to array, for, and recursive dictionary operations without allocation, iteration, or recursion limits. Reachability requires validation of an attacker-supplied PDF; one font stream can exhaust heap memory, spin CPU indefinitely, or overflow the JVM stack and abort the worker.

CVSS severity6.9
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in veraPDF-parser before 1.30.2 and 1.31.1 through 1.31.22 allows remote attackers to abort PDF validation. Type1FontProgram dispatches attacker-controlled Type 1 font tokens to array, for, and recursive dictionary operations without allocation, iteration, or recursion limits. Reachability requires validation of an attacker-supplied PDF; one font stream can exhaust heap memory, spin CPU indefinitely, or overflow the JVM stack and abort the worker.

The record

CVE
CVE-2026-54081
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
veraPDF
Product
veraPDF-parser
Classifications
CWE-1325, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.30.2
  2. Affected versionversion=>= 1.31.1, < 1.31.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

veraPDF · veraPDF-parserversion=< 1.30.2; version=>= 1.31.1, < 1.31.23

Published CVSS scores

6.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1325Improperly Controlled Sequential Memory Allocation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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