SeaCMS WeChat index.php addslashes sql injection

published 2026-09-03 2 mo ago modified 2026-09-03 2 mo ago also EUVD-2026-70534

cvss: 7.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits: 0; none known

A vulnerability was detected in SeaCMS up to 13.6. Affected is the function addslashes of the file weixin/index.php of the component WeChat Module. The manipulation of the argument Content results in sql injection. The attack may be launched remotely. The exploit is now public and may be used.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 2 mo ago (2026-09-03)

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/T-Chachamaru/seacms-13.6-security-advisories/blob/a084a3e573240d54860153321df271280daec262/d-003-weixin-xml-entity-sqli.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CNA	3.0	7.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CNA	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
CNA	4.0	5.5	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a SeaCMS

Classification

Weakness

CWE-89 Improper Neutralization of Special Elements used in an SQL Command
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

github.com /T-Chachamaru/seacms-13.6-security-advisories/blob/a084a3e573240d54860153321df271280daec262/d-003-weixin-xml-e
exploit
vuldb.com /vuln/398365
vdb-entry, technical-description
vuldb.com /vuln/398365/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-85138
third-party-advisory
vuldb.com /submit/892793
third-party-advisory

Sources

CVE List CVE-2026-85138
NVD CVE-2026-85138

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary