CVE-2026-71981
- Source
- https://cve.org/CVERecord?id=CVE-2026-71981
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71981.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-71981
- Published
- 2026-09-01T20:43:08Z
- Modified
- 2026-10-28T02:30:26Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Cypht < 2.12.2 PHP Object Injection RCE via back_query Parameter
- Details
-
Cypht before 2.12.2 contains a PHP object injection vulnerability that allows authenticated attackers to execute arbitrary operating system commands by supplying a crafted PHP object graph in the back_query GET parameter of the logout handler. Attackers can pass a base64-encoded serialized payload through this parameter, which is decoded and passed directly to unserialize() without an allow-list, signature check, or type restriction, enabling gadget-chain exploitation to achieve remote code execution as the web server process.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-502" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71981.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71981.json
- https://github.com/cypht-org/cypht/releases/tag/v2.12.2
- https://nvd.nist.gov/vuln/detail/CVE-2026-71981
- https://www.vulncheck.com/advisories/cypht-php-object-injection-rce-via-back-query-parameter
- https://github.com/cypht-org/cypht/pull/2073
- https://github.com/cypht-org/cypht/commit/e4aa2f34e33f9328e8c93514cc3966fc3d99925e
- https://github.com/cypht-org/cypht
Affected packages
Git / github.com/cypht-org/cypht
Affected ranges
- Type
- GIT
- Repo
- https://github.com/cypht-org/cypht
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "2.12.2" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "original_tag": "v2.12.2", "range": [ { "fixed": "fbaf979c3740a6e0f72e3a6c96e4a5102aae2133" } ], "source": "REFERENCES_TAG" }, { "range": [ { "fixed": "e4aa2f34e33f9328e8c93514cc3966fc3d99925e" } ], "source": "REFERENCES_COMMIT" } ] }