CVE-2026-76834 | 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 enabl
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.
- 🔗 gist.github.com/axg11/3e29501c33f6e1e05ac2a00107afd64e
- 🔗 github.com/b2evolution/b2evolution/blob/7.2.5/inc/_c…
- 🔗 github.com/b2evolution/b2evolution/blob/7.2.5/htsrv/…
- 🔗 github.com/b2evolution/b2evolution/commit/25c21cf9cc…
- 🔗 github.com/b2evolution/b2evolution/commit/999b5ad1d5…
- 🔗 github.com/b2evolution/b2evolution/commit/335abf09bc…
- 🔗 b2evolution.net/news/2022/03/26/2022-update-eol
- 🔗 github.com/b2evolution/b2evolution
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📊 Historien-Charts — Criticals-Trend · Vendors · EPSS-Verteilung
| Tier | CVEs | Anteil |
|---|---|---|
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| <10 % | 366.558 | 93,2 % |
CVE-2026-76834 | 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 enabl
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 at