9.8

CVE-2026-35458: Gotenberg has a ReDoS via extraHttpHeaders scope feature

Analyzed
AliasesGHSA-fmwg-qcqh-m992GO-2026-5372
Published 07-04-2026Last modified 09-04-2026

Vulnerability summary

CVE-2026-35458 is a critical (CVSS 9.8) vulnerability in gotenberg. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.7% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.50%
0%100%
Low · -0.11 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 07-04-2026
    PublishedVulnerability first disclosed.
  2. 09-04-2026
    Last modifiedVulnerability information updated.

Description

Gotenberg is an API for converting document formats. In 8.29.1 and earlier, Gotenberg uses dlclark/regexp2 to compile user-supplied scope patterns without setting a proper timeout. Users with access to features using this logic can hang workers indefinitely.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

Decrease -0.11 pp

From 0.61% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Gotenberg

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/gotenberg/gotenberg2 products
  • v7All versions (No fix recorded)
  • v8< 8.30.0
Gotenberg1 product
Thecodingmachine1 product

3 vendors · 4 products

References

4 links