CVE-2026-81902
- Source
- https://cve.org/CVERecord?id=CVE-2026-81902
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81902.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-81902
- Published
- 2026-09-14T20:34:23Z
- Modified
- 2026-09-20T11:47:27Z
- Severity
-
- 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Concrete CMS 9.0.0 to 9.5.2 is vulnerable to CSRF on Orphan Block Cleanup
- Details
-
Concrete CMS 9 through 9.5.2 did not validate a CSRF token in the orphaned block removal panel action (removeOrphanedBlocks). A remote attacker could craft a request that, when loaded by an authenticated user holding edit permission on the target page, deleted every block on that page's current version; blocks not aliased to another page or scrapbook entry were also removed from the global Blocks table and their block-type data table, permanently destroying the content. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 7.1 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.
- Database specific
{ "cna_assigner": "ConcreteCMS", "cwe_ids": [ "CWE-352" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81902.json" }- References
Affected packages
Git / github.com/concretecms/concretecms
Affected ranges
- Type
- GIT
- Repo
- https://github.com/concretecms/concretecms
- Events
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "9.0.0" }, { "last_affected": "9.5.2" }, { "fixed": "9.5.3" } ], "source": [ "AFFECTED_FIELD", "CPE_RANGE" ] }