chenhg5 cc-connect webhook.go authenticate code injection

published 2026-08-19 2 mo ago modified 2026-08-20 2 mo ago also EUVD-2026-63172

cvss: 7.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

A vulnerability was found in chenhg5 cc-connect up to 1.4.1. Affected by this vulnerability is the function Authenticate of the file core/webhook.go. The manipulation of the argument exec results in code injection. The attack may be performed from remote. The exploit has been made public and could be used. The reported GitHub issue was closed automatically due to inactivity.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 2 mo ago (2026-08-20)

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

vuldb.com https://vuldb.com/submit/878916 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/chenhg5/cc-connect/issues/1488 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
CNA	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

chenhg5 cc-connect

Classification

Weakness

CWE-94 Improper Control of Generation of Code
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

vuldb.com /submit/878916
third-party-advisory, exploit
github.com /chenhg5/cc-connect/issues/1488
exploit, issue-tracking
vuldb.com /vuln/393229
vdb-entry, technical-description
vuldb.com /vuln/393229/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-76760
third-party-advisory
github.com /chenhg5/cc-connect/
product

Sources

CVE List CVE-2026-76760
NVD CVE-2026-76760

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