CVE-2023-43661: Cachet is an open-source status page system

Q: How do I fix CVE-2023-43661?

cachet: upgrade to 2.4. Exact commands for each OS are on this page.

Q: Is CVE-2023-43661 being exploited?

CVE-2023-43661 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-43661 affect?

CVE-2023-43661 affects cachet. Severity is high (CVSS 8.8). Cachet is an open-source status page system. Prior to the 2.4 branch, a template functionality which allows users to create templates allows them to execute any code on the server during the bad filtration and old twig version. Commit 6fb04

Q: How urgent is CVE-2023-43661?

Priority 61/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

This week

HIGH 8.8UPGRADE

CVE-2023-43661 is a high-severity flaw (CVSS 8.8) affecting cachet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cachet is an open-source status page system. Prior to the 2.4 branch, a template functionality which allows users to create templates allows them to execute any code on the server during the bad filtration and old twig version. Commit 6fb043e109d2a262ce3974e863c54e9e5f5e0587 of the 2.4 branch contains a patch for this issue.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	51.9% (top 1%)
CISA exploited list	No
Weakness	CWE-94, CWE-74
Published	2023-10-11
Last modified	2026-10-20

Publisher (CNA): GitHub, Inc. · Vendor: all-three

Last updated 2026-10-20 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-11 20:15 UTCPublished CVE record published
2026-10-20 19:17 UTCUpdated Record last modified

all-three cachet UPGRADE

Affected: < 2.4

Fixed in: 2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cachet || rpm -q cachet || cachet --version

2. UPGRADE to 2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cachet

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cachet

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-43661?

cachet: upgrade to 2.4. Exact commands for each OS are on this page.

Is CVE-2023-43661 being exploited?

CVE-2023-43661 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-43661 affect?

CVE-2023-43661 affects cachet. Severity is high (CVSS 8.8). Cachet is an open-source status page system. Prior to the 2.4 branch, a template functionality which allows users to create templates allows them to execute any code on the server during the bad filtration and old twig version. Commit 6fb04

How urgent is CVE-2023-43661?

Priority 61/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2021-39165 HIGH 8.1 UPGRADE Cachet is an open source status page

References

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