CVE-2026-72691

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Source
https://cve.org/CVERecord?id=CVE-2026-72691
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72691.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-72691
Published
2026-08-10T11:59:11Z
Modified
2026-08-28T11:30:16Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
OpenSignLabs opensignserver - Authentication Bypass
Details

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.

Database specific 
{
    "cna_assigner": "TuranSec",
    "cwe_ids": [
        "CWE-288"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72691.json"
}
References

Affected packages

Git / github.com/opensignlabs/opensign

Affected ranges

Type
GIT
Repo
https://github.com/opensignlabs/opensign
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a56b87a7020de74b0f7dda29d7ec3de382a456bb
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.37.0"
        },
        {
            "fixed": "2.37.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

1.*
1.3.2-beta
v1.*
v1.0.3
v1.0.5-beta
v1.0.6-beta
v1.0.7-beta
v1.1.0-beta
v1.1.1-beta
v1.2.0-beta
v1.2.1-beta
v1.2.2-beta
v1.3.0-beta
v1.3.1-beta
v1.4.0-beta
v1.4.1
v1.4.2
v1.5.0
v1.5.1
v1.5.8
v1.6.0
v1.6.1
v1.6.2
v1.7.0
v1.7.1
v1.7.2
v1.7.3
v1.8.0
v1.8.1
v2.*
v2.0.0
v2.1.0
v2.1.1
v2.1.2
v2.12.0
v2.13.0
v2.15.0
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.19.1
v2.19.2
v2.2.0
v2.20.0
v2.20.1
v2.21.0
v2.21.1
v2.22.0
v2.23.0
v2.24.1
v2.25.0
v2.26.0
v2.27.2
v2.28.0
v2.29.0
v2.29.1
v2.29.2
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.30.0
v2.31.0
v2.32.0
v2.33.0
v2.34.0
v2.35.0
v2.36.0
v2.4.0
v2.4.1
v2.5.0
v2.6.0
v2.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72691.json"