CVE-2026-42594Public exploitNetwork attack vector

Unauthenticated service crash via pooled context reuse

Published May 14, 2026 · Updated May 14, 2026

A race condition in Gotenberg before 8.32.0 allows remote attackers to crash the service through concurrent webhook and API requests. The webhook goroutine retains a recycled echo.Context whose store can be cleared before hardTimeoutMiddleware performs an unchecked logger type assertion, causing an unrecovered panic. Any client with network access can trigger the panic without credentials; each crash terminates in-flight conversions, and sustained requests can keep restarted instances unavailable.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in Gotenberg before 8.32.0 allows remote attackers to crash the service through concurrent webhook and API requests. The webhook goroutine retains a recycled echo.Context whose store can be cleared before hardTimeoutMiddleware performs an unchecked logger type assertion, causing an unrecovered panic. Any client with network access can trigger the panic without credentials; each crash terminates in-flight conversions, and sustained requests can keep restarted instances unavailable.

The record

CVE
CVE-2026-42594
Published
May 14, 2026
Updated
May 14, 2026
Vendor
Gotenberg
Product
Gotenberg
Classifications
CWE-362, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2026CVE publishedPublication date reported by the CVE source.
  2. May 14, 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=< 8.32.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Gotenberg · Gotenbergversion=< 8.32.0

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

Public exploit references

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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