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22 vulnerabilities by thecodingmachine
CVE-2026-42590 (GCVE-0-2026-42590)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:36 – Updated: 2026-05-15 15:57
VLAI
Title
Gotenberg: ExifTool group-prefix syntax bypasses dangerous-tag blocklist
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.30.0, The ExifTool metadata write blocklist in Gotenberg can be bypassed using ExifTool's group-prefix syntax, enabling arbitrary file rename, move, hardlink, and symlink creation on the server. ExifTool supports group-prefix syntax where File:FileName is processed identically to FileName -- the prefix is stripped by SetNewValue in Writer.pl before tag matching. The safeKeyPattern regex (^[a-zA-Z0-9\-_.:]+$) allows colons, so prefixed tag names pass validation. Any prefix works: File:FileName, System:Directory, a:HardLink, etc. Additionally, FilePermissions, FileUserID, and FileGroupID pseudo-tags are not blocked at all and can modify file attributes without any prefix. This vulnerability is fixed in 8.30.0.
Severity
8.2 (High)
CWE
- CWE-184 - Incomplete List of Disallowed Inputs
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-42597 (GCVE-0-2026-42597)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:34 – Updated: 2026-05-14 18:04
VLAI
Title
Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// scheme
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the /forms/chromium/convert/url and /forms/chromium/screenshot/url routes accept url=file:///tmp/... from anonymous callers. The default Chromium deny-list intentionally exempts file:///tmp/ so HTML/Markdown routes can load their own request-local assets, and those routes apply a per-request AllowedFilePrefixes guard to scope the read. The URL routes never set AllowedFilePrefixes, so the scope guard silently skips. Alice enumerates /tmp/, walks Gotenberg's per-request working directories, and reads the raw source files of other in-flight conversions as rendered PDF output. This vulnerability is fixed in 8.32.0.
Severity
5.9 (Medium)
Assigner
References
1 reference
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|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-42595 (GCVE-0-2026-42595)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:33 – Updated: 2026-05-14 18:56
VLAI
Title
Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, Gotenberg's Chromium URL-to-PDF endpoint (/forms/chromium/convert/url) has no default protection against HTTP/HTTPS-based SSRF. The default deny-list regex only blocks file:// URIs. An unauthenticated attacker can point Chromium at any internal IP — including loopback, RFC 1918 ranges, and cloud metadata endpoints — and receive the response rendered as a PDF. Additionally, even when operators configure a custom deny-list, the protection is bypassed via HTTP redirects. Gotenberg's Chromium instance follows 302 redirects from an attacker-controlled external URL to internal targets without re-validating the redirect destination against the deny-list. This vulnerability is fixed in 8.32.0.
Severity
8.6 (High)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-42594 (GCVE-0-2026-42594)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:32 – Updated: 2026-05-16 00:34
VLAI
Title
Gotenberg: Unauthenticated denial of service via echo.Context pool reuse in webhook async goroutine
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the webhook middleware spawns a goroutine that holds a reference to the request's echo.Context after the synchronous handler returns ErrAsyncProcess and Echo recycles the context back to its sync.Pool. When a concurrent request claims the recycled context, c.Reset() clears the store. If the webhook goroutine reaches hardTimeoutMiddleware at that moment, an unchecked type assertion on a nil store entry panics outside any recover() scope, crashing the Gotenberg process. Any anonymous caller reaches the webhook path (default webhook-deny-list filters only the webhook destination, not the submitter). A single-source stress of ~24 webhook requests plus ~60 GET /version requests crashes the process in about two seconds. This vulnerability is fixed in 8.32.0.
Severity
7.5 (High)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-42593 (GCVE-0-2026-42593)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:31 – Updated: 2026-05-14 19:51
VLAI
Title
Gotenberg: Arbitrary PDF read via stampExpression and watermarkExpression in merge, split, and convert routes
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, pdfengines/merge, pdfengines/split, libreoffice/convert, chromium/convert/url, chromium/convert/html, and chromium/convert/markdown accept stampSource=pdf + stampExpression=/path and watermarkSource=pdf + watermarkExpression=/path from anonymous callers. The dedicated stamp/watermark routes require an uploaded file when the source type is image or pdf; these six routes only overwrite the expression when a file is uploaded, leaving the user-controlled path intact when no file is attached. pdfcpu opens the path and composites its pages onto the output PDF, which returns to the caller. An attacker reads any PDF the Gotenberg process can access on the container filesystem. This vulnerability is fixed in 8.32.0.
Severity
5.3 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-42592 (GCVE-0-2026-42592)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:30 – Updated: 2026-05-14 18:14
VLAI
Title
Gotenberg: DNS rebinding bypasses SSRF validation on Chromium URL conversion routes
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, FilterOutboundURL resolves the hostname, checks the resolved IPs against the private-address deny-list, and returns only the error. It discards the resolved addresses. Chromium later performs its own DNS resolution when it navigates to the URL. An attacker who controls DNS for a hostname with a short TTL returns a public IP on the first query (Gotenberg allows) and a private IP on the second query (Chromium connects to the attacker-chosen internal address). The CDP Fetch.requestPaused handler re-checks the URL but runs its own DNS resolution, leaving a timing window before Chromium's actual TCP connect. The rendered internal service response returns to the caller as a PDF. This vulnerability is fixed in 8.32.0.
Severity
5.3 (Medium)
CWE
Assigner
References
1 reference
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CVE-2026-42591 (GCVE-0-2026-42591)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:20 – Updated: 2026-05-14 18:07
VLAI
Title
Gotenberg: Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely bypassing the SSRF filters. This vulnerability is fixed in 8.32.0.
Severity
8.2 (High)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
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CVE-2026-42596 (GCVE-0-2026-42596)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:19 – Updated: 2026-05-15 16:04
VLAI
Title
Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.
Severity
9.4 (Critical)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-40893 (GCVE-0-2026-40893)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:18 – Updated: 2026-05-14 18:08
VLAI
Title
Gotenberg: ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names Allows Arbitrary File Rename and Move
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg only checks if the tag is exactly FileName, so System:FileName slips right through and ExifTool happily renames the file. This allows remote attackers to move, rename, and change permissions for arbitrary files. This vulnerability is fixed in 8.31.0.
Severity
8.2 (High)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-42589 (GCVE-0-2026-42589)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:11 – Updated: 2026-05-14 18:59
VLAI
Title
Gotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection
Summary
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg's /forms/pdfengines/metadata/write HTTP endpoint accepts a JSON metadata object and passes its keys directly to ExifTool via the go-exiftool library. No validation is performed on key characters. A \n embedded in a JSON key splits the ExifTool stdin stream into a new argument line, allowing an attacker to inject arbitrary ExifTool flags — including -if, which evaluates Perl expressions. This achieves unauthenticated OS command execution in a single HTTP request. The response is HTTP 200 with a valid PDF, making the attack transparent to basic monitoring. This vulnerability is fixed in 8.31.0.
Severity
9.8 (Critical)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-40281 (GCVE-0-2026-40281)
Vulnerability from cvelistv5 – Published: 2026-05-06 20:46 – Updated: 2026-05-07 12:33
VLAI
Title
Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values
Summary
Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint validates metadata keys for control characters but leaves metadata values unsanitized. A newline character in a metadata value splits the ExifTool stdin line into two separate arguments, allowing injection of arbitrary ExifTool pseudo-tags such as -FileName, -Directory, -SymLink, and -HardLink. This is a bypass of the incomplete key-sanitization fix introduced in v8.30.1. An unauthenticated attacker can rename or move any PDF being processed to an arbitrary path in the container filesystem, overwrite arbitrary files, or create symlinks and hard links at arbitrary paths.
Severity
10 (Critical)
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
2 references
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|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
| https://github.com/gotenberg/gotenberg/commit/405… | x_refsource_MISC |
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CVE-2026-39383 (GCVE-0-2026-39383)
Vulnerability from cvelistv5 – Published: 2026-05-05 20:39 – Updated: 2026-05-06 15:32
VLAI
Title
Gotenberg unauthenticated blind SSRF via unfiltered webhook URL
Summary
Gotenberg is an API-based document conversion tool. In version 8.29.1, an unauthenticated attacker with network access can force the server to make outbound HTTP POST requests to arbitrary internal or external destinations by supplying a crafted URL in the Gotenberg-Webhook-Url request header. The FilterDeadline function in filter.go is intended to gate outbound URLs, but when both the allow-list and deny-list are empty (the default configuration), it returns nil unconditionally and permits any URL.
This is a blind SSRF: Gotenberg POSTs the converted document to the webhook URL and only checks whether the response status code is an error, but never returns the target's response body to the attacker. An attacker can use this to probe internal network infrastructure by observing whether the error callback is invoked, force POST requests against internal services that perform side effects, and confirm reachability of cloud metadata endpoints. The retryable HTTP client issues up to 4 automatic retries per request, amplifying each probe.
This issue has been fixed in version 8.31.0. As a workaround, configure the GOTENBERG_API_WEBHOOK_ALLOW_LIST environment variable to restrict webhook URLs to known receivers, or set GOTENBERG_API_WEBHOOK_DENY_LIST to block RFC-1918 and link-local address ranges.
Severity
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-40280 (GCVE-0-2026-40280)
Vulnerability from cvelistv5 – Published: 2026-05-05 19:52 – Updated: 2026-05-06 18:41
VLAI
Title
Gotenberg SSRF via case-insensitive URL scheme bypass in webhook and downloadFrom deny-lists
Summary
Gotenberg is an API-based document conversion tool. In versions 8.30.1 and earlier, the default private-IP deny-lists for the --webhook-deny-list and --api-download-from-deny-list flags use a case-sensitive regular expression (^https?://) to match URL schemes. Because Go's net/url.Parse() normalizes the scheme to lowercase before establishing the outbound TCP connection, an attacker can bypass the deny-list by simply capitalizing part of the URL scheme (e.g., HTTP://, HTTPS://, or Http://). This allows unauthenticated requests to reach internal network services, including private IP ranges, loopback addresses, and cloud instance metadata endpoints such as HTTP://169.254.169.254/latest/meta-data/.
This bypasses the same security control that was patched in CVE-2026-27018.
This issue has been fixed in version 8.31.0.
Severity
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
| https://github.com/gotenberg/gotenberg/commit/3f0… | x_refsource_MISC |
| https://github.com/advisories/GHSA-jjwv-57xh-xr6r | x_refsource_MISC |
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CVE-2026-35458 (GCVE-0-2026-35458)
Vulnerability from cvelistv5 – Published: 2026-04-07 14:24 – Updated: 2026-04-09 14:20
VLAI
Title
Gotenberg has a ReDoS via extraHttpHeaders scope feature
Summary
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.
Severity
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
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CVE-2026-27018 (GCVE-0-2026-27018)
Vulnerability from cvelistv5 – Published: 2026-03-30 20:14 – Updated: 2026-03-31 14:16
VLAI
Title
Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme
Summary
Gotenberg is an API for converting document formats. Prior to version 8.29.0, the fix introduced for CVE-2024-21527 can be bypassed using mixed-case or uppercase URL schemes. This issue has been patched in version 8.29.0.
Severity
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/gotenberg/gotenberg/security/a… | x_refsource_CONFIRM |
| https://github.com/gotenberg/gotenberg/commit/06b… | x_refsource_MISC |
| https://github.com/gotenberg/gotenberg/commit/862… | x_refsource_MISC |
| https://github.com/gotenberg/gotenberg/releases/t… | x_refsource_MISC |
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CVE-2020-14160 (GCVE-0-2020-14160)
Vulnerability from cvelistv5 – Published: 2021-08-26 10:57 – Updated: 2024-08-04 12:39
VLAI
Summary
An SSRF vulnerability in Gotenberg through 6.2.1 exists in the remote URL to PDF conversion, which results in a remote attacker being able to read local files or fetch intranet resources.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/thecodingmachine/gotenberg/releases | x_refsource_MISC |
| https://github.com/gotenberg/gotenberg/pull/319 | x_refsource_MISC |
| https://github.com/gotenberg/gotenberg/issues/215 | x_refsource_MISC |
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CVE-2020-14161 (GCVE-0-2020-14161)
Vulnerability from cvelistv5 – Published: 2021-08-26 10:57 – Updated: 2024-08-04 12:39
VLAI
Summary
It is possible to inject HTML and/or JavaScript in the HTML to PDF conversion in Gotenberg through 6.2.1 via the /convert/html endpoint.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/thecodingmachine/gotenberg/releases | x_refsource_MISC |
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CVE-2021-23345 (GCVE-0-2021-23345)
Vulnerability from cvelistv5 – Published: 2021-02-26 17:20 – Updated: 2024-09-16 17:17
VLAI
Title
Server-side Request Forgery (SSRF)
Summary
All versions of package github.com/thecodingmachine/gotenberg are vulnerable to Server-side Request Forgery (SSRF) via the /convert/html endpoint when the src attribute of an HTML element refers to an internal system file, such as <iframe src='file:///etc/passwd'>.
Severity
5.3 (Medium)
CWE
- Server-side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMTHECODI… | x_refsource_MISC |
| https://github.com/thecodingmachine/gotenberg/iss… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | github.com/thecodingmachine/gotenberg |
Affected:
0 , < unspecified
(custom)
|
Date Public
2021-02-26 00:00
Credits
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CVE-2020-13449 (GCVE-0-2020-13449)
Vulnerability from cvelistv5 – Published: 2021-01-07 21:17 – Updated: 2024-08-04 12:18
VLAI
Summary
A directory traversal vulnerability in the Markdown engine of Gotenberg through 6.2.1 allows an attacker to read any container files.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/thecodingmachine/gotenberg/iss… | x_refsource_MISC |
| http://packetstormsecurity.com/files/160744/Goten… | x_refsource_MISC |
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CVE-2020-13450 (GCVE-0-2020-13450)
Vulnerability from cvelistv5 – Published: 2021-01-07 21:17 – Updated: 2024-08-04 12:18
VLAI
Summary
A directory traversal vulnerability in file upload function of Gotenberg through 6.2.1 allows an attacker to upload and overwrite any writable files outside the intended folder. This can lead to DoS, a change to program behavior, or code execution.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/thecodingmachine/gotenberg/iss… | x_refsource_MISC |
| http://packetstormsecurity.com/files/160744/Goten… | x_refsource_MISC |
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CVE-2020-13451 (GCVE-0-2020-13451)
Vulnerability from cvelistv5 – Published: 2021-01-07 21:16 – Updated: 2024-08-04 12:18
VLAI
Summary
An incomplete-cleanup vulnerability in the Office rendering engine of Gotenberg through 6.2.1 allows an attacker to overwrite LibreOffice configuration files and execute arbitrary code via macros.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/thecodingmachine/gotenberg/iss… | x_refsource_MISC |
| http://packetstormsecurity.com/files/160744/Goten… | x_refsource_MISC |
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CVE-2020-13452 (GCVE-0-2020-13452)
Vulnerability from cvelistv5 – Published: 2021-01-07 21:16 – Updated: 2024-08-04 12:18
VLAI
Summary
In Gotenberg through 6.2.1, insecure permissions for tini (writable by user gotenberg) potentially allow an attacker to overwrite the file, which can lead to denial of service or code execution.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/thecodingmachine/gotenberg/iss… | x_refsource_MISC |
| http://packetstormsecurity.com/files/160744/Goten… | x_refsource_MISC |
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