CVE-2026-72688

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Source
https://cve.org/CVERecord?id=CVE-2026-72688
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72688.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-72688
Published
2026-08-10T11:59:02.770Z
Modified
2026-08-12T04:19:24.412517123Z
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 - Missing Authentication for Critical Function
Details

A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read arbitrary stored documents via the fileupload Parse cloud function. The function mints MASTER_KEY-signed file access tokens for any caller-supplied URL without performing any session check, defeating the only access control protecting stored contract files.

Database specific 
{
    "cwe_ids": [
        "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72688.json",
    "cna_assigner": "TuranSec"
}
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 
{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.37.0"
        },
        {
            "fixed": "2.37.0"
        }
    ]
}

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-2026-72688.json"