TI-2026-33479 Aliases CVE-2026-45742 GHSA-vp73-vjw8-8f32

Gotenberg: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

HIGH 72CWE-362Published 2026-08-19 · Updated 2026-08-19

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Gotenberg is a Docker-powered stateless API for PDF files. From 8.10.0 until 8.33.0, the newContext function in pkg/modules/api/context.go starts one errgroup.Go goroutine for each multipart downloadFrom entry and allows those goroutines to concurrently write to the shared ctx.files, ctx.diskToOriginal, and ctx.filesByField maps and slices. Go maps and slices are not safe for concurrent mutation, so a crafted multipart request containing many downloadFrom entries can trigger a data race and terminate the process with a fatal concurrent map writes runtime error. The default configuration enables downloadFrom and disables authentication, allowing an unauthenticated remote attacker to crash an exposed conversion service and cause a denial of service. This issue is fixed in version 8.33.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00705 53rd percentileScored 2026-11-07

Fix Fixed gotenberg (gotenberg): 8.33.0github.com/gotenberg/gotenberg/v8 (Go): 8.33.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
gotenberg	gotenberg	8.10.0 to before 8.33.0	8.33.0	Patch available	CNA
—	github.com/gotenberg/gotenberg/v8 (Go)	8.10.0 to before 8.33.0	8.33.0	Patch available	GHSA-vp73-vjw8-8f32

gotenberg Vendorgotenberg Affected 8.10.0 to before 8.33.0 Fixed in 8.33.0 Patch available CNA
github.com/gotenberg/gotenberg/v8 (Go) Vendor— Affected 8.10.0 to before 8.33.0 Fixed in 8.33.0 Patch available GHSA-vp73-vjw8-8f32

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:thecodingmachine:gotenberg::::::::	—	—	gotenberg

cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:* Versions — — ·gotenberg

Remediation

Fix · CNA gotenberg (gotenberg) Fixed in 8.33.0
Fix · GHSA-vp73-vjw8-8f32 github.com/gotenberg/gotenberg/v8 (Go) Fixed in 8.33.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-45742
2026-10-03 Alias added: GHSA-vp73-vjw8-8f32

References

Other 4

TI-2026-30869 Gotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection CVSS 3.1CRITICAL 9.8
TI-2026-29063 Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values CVSS 3.1CRITICAL 10.0
TI-2026-30876 Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook CVSS 3.1CRITICAL 9.4
TI-2026-27588 Gotenberg has a ReDoS via extraHttpHeaders scope feature CVSS 4.0HIGH 8.7
TI-2026-30875 Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass CVSS 3.1HIGH 8.6
TI-2026-30871 Gotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8 CVSS 3.1HIGH 8.2

See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences