CVE-2026-76834: b2evolution b2evolution CMS

Affected products, as the CNA wrote them
Vendor	Product	Versions
b2evolution	b2evolution CMS pkg:github/b2evolution/b2evolution	affected 6.7.8 to 7.2.5, inclusive semver Other versions: unaffected

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.2	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
8.1	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0085, the 58th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 17 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

gist.github.com/axg11/3e29501c33f6e1e05ac2a00107afd64e technical-description
github.com/b2evolution/b2evolution/blob/7.2.5/inc/_core/_param.funcs.php#L2860 technical-description
github.com/b2evolution/b2evolution/blob/7.2.5/htsrv/call_plugin.php#L49 technical-description
github.com/b2evolution/b2evolution/commit/25c21cf9cc4261324001f9039509710b37ee2c4d patch
github.com/b2evolution/b2evolution/commit/999b5ad1d59760d7e450ceb541f55432fc74cd27 patch
github.com/b2evolution/b2evolution/commit/335abf09bcea61717bd00bc1e3889f8100ebd1bb technical-descriptionpatch
b2evolution.net/news/2022/03/26/2022-update-eol vendor-advisory
github.com/b2evolution/b2evolution product
www.vulncheck.com/advisories/b2evolution-cms-6.7.8-through-7.2.5-object-injection-via-negative-integer-array-key third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.