{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-72691 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-72691 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-72691 is a high-severity authentication bypass vulnerability in OpenSignLabs opensignserver, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-72691 and fix it if it is affected.\n\nWhat it is: CVE-2026-72691 is a high-severity authentication bypass vulnerability in OpenSignLabs opensignserver, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-72691 in the wild and no public exploit code.\n\nAffected product: OpenSignLabs opensignserver. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-72691/ (Markdown: https://insights.sbomify.com/CVE-2026-72691/index.md)","id":"CVE-2026-72691","markdown":"https://insights.sbomify.com/CVE-2026-72691/index.md","name":"CVE-2026-72691","record":{"aliases":["GHSA-9g58-36q9-g7mq"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenSignLabs opensignserver","requires_auth":"none","summary":"Unauthenticated attackers can bypass authentication in OpenSignLabs opensignserver to mint signed access tokens for arbitrary files, enabling unauthorized data access.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TuranSec","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"OpenSignLabs opensignserver - Authentication Bypass","id":"CVE-2026-72691","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"OpenSignLabs opensignserver - Missing Authorization","id":"CVE-2026-72692"},"packages":[],"prev":{"headline":"Attendize Attendize - Cross-Tenant Authorization Bypass","id":"CVE-2026-72690"},"products":["opensignserver"],"published":"2026-08-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-10","vendors":["OpenSignLabs"]},"summary":"Unauthenticated attackers can bypass authentication in OpenSignLabs opensignserver to mint signed access tokens for arbitrary files, enabling unauthorized data access.","url":"https://insights.sbomify.com/CVE-2026-72691/"}