b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in param_check_serialized_array() fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST requests to htsrv/call_plugin.php that bypass validation and reach unserialize(), instantiating arbitrary PHP objects with attacker-chosen properties that may enable code execution if suitable POP gadget chains exist.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 17 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in param_check_serialized_array() fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST requests to htsrv/call_plugin.php that bypass validation and reach unserialize(), instantiating arbitrary PHP objects with attacker-chosen properties that may enable code execution if suitable POP gadget chains exist. | |
| Title | b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key | |
| First Time appeared |
B2evolution
B2evolution b2evolution Cms |
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| Weaknesses | CWE-502 | |
| CPEs | cpe:2.3:a:b2evolution:b2evolution_cms:*:*:*:*:*:*:*:* | |
| Vendors & Products |
B2evolution
B2evolution b2evolution Cms |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-09-17T15:16:50.748Z
Reserved: 2026-08-19T20:34:00.154Z
Link: CVE-2026-76834
No data.
Status : Received
Published: 2026-09-17T16:17:42.270
Modified: 2026-09-17T16:17:42.270
Link: CVE-2026-76834
No data.
OpenCVE Enrichment
Updated: 2026-09-17T21:15:14Z
Weaknesses