CVE-2026-72691
Last modified
CVE-2026-72691 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An authentication bypass vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to mint MASTER_KEY-signed file access tokens for arbitrary stored files via the getsignedurl Parse cloud function. The function skips its isAuthenticated check whenever any docId parameter is supplied, even one corresponding to no real document, allowing the authentication gate to be bypassed by supplying an arbitrary string as docId..
Description
An authentication bypass vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to mint MASTER_KEY-signed file access tokens for arbitrary stored files via the getsignedurl Parse cloud function. The function skips its isAuthenticated check whenever any docId parameter is supplied, even one corresponding to no real document, allowing the authentication gate to be bypassed by supplying an arbitrary string as docId.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| OpenSignLabs | opensignserver | <= 2.37.0 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-72691?
How severe is CVE-2026-72691?
How do I fix CVE-2026-72691?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-7267A flaw has been found in SourceCodester Pizzafy Ecommerce Sy…6.3
- CVE-2026-7268A vulnerability has been found in SourceCodester Pizzafy Eco…6.3
- CVE-2026-72688A missing authentication vulnerability in OpenSignLabs opens…7.5
- CVE-2026-72689A broken object-level authorization vulnerability in OpenSig…7.5
- CVE-2026-7269A vulnerability was found in SourceCodester Pharmacy Sales a…2.4
- CVE-2026-72690An improper authorization vulnerability in Attendize through…7.1
- CVE-2026-72692A missing authorization vulnerability in OpenSignLabs opensi…7.5
- CVE-2026-72693`openvt -u` is intended to identify the owner of the current…7.8
- CVE-2026-72694A flaw was found in MRTG. When the MRTG daemon is started as…7.1
- CVE-2026-7270An operator precedence bug in the kernel results in a scenar…7.8
- CVE-2026-7271A vulnerability was detected in DV0x creative-ad-agent up to…5.5
- CVE-2026-72712Nmap versions up to and including 7.99 contains a denial of …6.5
Are you affected by CVE-2026-72691?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST