CVE-2026-40941

Cacti: Package Import Signature Validation Bypass Allows Self-Signed Packages

7.1 HighFix available

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.27%Up 0.1 points since Jun 26, 2026

What each source reports

CVE List Score used 7.1

Cacti: Package Import Signature Validation Bypass Allows Self-Signed Packages

Record: CVE-2026-40941
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-347
Updated: 2026-11-02

EUVDEUVD-2026-39589 7.1

Record: EUVD-2026-39589
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

NVD 7.1

Record: CVE-2026-40941
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-347
Updated: 2026-11-02

OSV 7.1

Cacti: Package Import Signature Validation Bypass Allows Self-Signed Packages

Record: CVE-2026-40941
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-347
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-40941 6.5

Record: DEBIAN-CVE-2026-40941
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-40941 7.1

Record: UBUNTU-CVE-2026-40941
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

cacti

Affected packages

Affected packages
Package	Affected	Fixed
`cacti` Debian:12	All versions, plus listed versions 1.2.24+ds1-11.2.24+ds1-1+deb12u11.2.24+ds1-1+deb12u21.2.24+ds1-1+deb12u31.2.24+ds1-1+deb12u4 Show 17 moreShow less 1.2.24+ds1-1+deb12u51.2.25+ds1-11.2.25+ds1-21.2.26+ds1-11.2.27+ds1-11.2.27+ds1-21.2.28+ds1-11.2.28+ds1-21.2.28+ds1-31.2.28+ds1-41.2.30+ds1-11.2.30+ds1-21.2.30+ds1-31.2.31+ds1-11.2.31+ds1-21.2.31+ds1-31.2.31+ds1-4	None known
`cacti` Debian:13	All versions, plus listed versions 1.2.30+ds1-11.2.30+ds1-21.2.30+ds1-31.2.31+ds1-11.2.31+ds1-21.2.31+ds1-31.2.31+ds1-4	None known
`cacti` Debian:14	before 1.2.31+ds1-1, plus listed versions 1.2.30+ds1-11.2.30+ds1-21.2.30+ds1-3	1.2.31+ds1-1
`cacti` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 0.8.8b+dfsg-30.8.8b+dfsg-50.8.8b+dfsg-5ubuntu0.10.8.8b+dfsg-5ubuntu0.20.8.8b+dfsg-5ubuntu0.2+esm10.8.8b+dfsg-5ubuntu0.2+esm2	None known
`cacti` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 0.8.8f+ds1-20.8.8f+ds1-30.8.8f+ds1-40.8.8f+ds1-4ubuntu10.8.8f+ds1-4ubuntu2 Show 7 moreShow less 0.8.8f+ds1-4ubuntu30.8.8f+ds1-4ubuntu40.8.8f+ds1-4ubuntu4.16.040.8.8f+ds1-4ubuntu4.16.04.10.8.8f+ds1-4ubuntu4.16.04.20.8.8f+ds1-4ubuntu4.16.04.2+esm10.8.8f+ds1-4ubuntu4.16.04.2+esm2	None known
`cacti` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 1.1.18+ds1-11.1.27+ds1-21.1.27+ds1-31.1.28+ds1-21.1.35+ds1-1 Show 5 moreShow less 1.1.36+ds1-11.1.38+ds1-11.1.38+ds1-1ubuntu0.1~esm11.1.38+ds1-1ubuntu0.1~esm31.1.38+ds1-1ubuntu0.1~esm4	None known
`cacti` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 1.2.4+ds1-2ubuntu31.2.9+ds1-1ubuntu11.2.9+ds1-1ubuntu21.2.10+ds1-1ubuntu11.2.10+ds1-1ubuntu1+esm11.2.10+ds1-1ubuntu1.11.2.10+ds1-1ubuntu1.1+esm11.2.10+ds1-1ubuntu1.1+esm2	None known
`cacti` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 1.2.16+ds1-2ubuntu11.2.19+ds1-2ubuntu11.2.19+ds1-2ubuntu1+esm11.2.19+ds1-2ubuntu1.11.2.19+ds1-2ubuntu1.1+esm11.2.19+ds1-2ubuntu1.1+esm2	None known
`cacti` Ubuntu:24.04:LTS	All versions, plus listed versions 1.2.25+ds1-21.2.26+ds1-11.2.26+ds1-1ubuntu0.1	None known
`cacti` Ubuntu:25.10	All versions, plus listed versions 1.2.28+ds1-4ubuntu11.2.30+ds1-1ubuntu1	None known
`cacti` Ubuntu:26.10	All versions, plus listed versions 1.2.30+ds1-1ubuntu21.2.30+ds1-1ubuntu31.2.31+ds1-3ubuntu2	None known
`cacti` Ubuntu:26.04:LTS	All versions, plus listed versions 1.2.30+ds1-1ubuntu11.2.30+ds1-1ubuntu2	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-40941 is a high vulnerability (CVSS 7.1) in Cacti, published June 25, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 18th percentile. Fixed in cacti 1.2.31+ds1-1.