CVE-2022-25891: The package github.com/containrrr/shoutrrr/pkg/util before 0.6.0 are vulnerable to Denial of Service (DoS) via

Q: How do I fix CVE-2022-25891?

shoutrrr: upgrade to 0.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-25891 being exploited?

CVE-2022-25891 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-2022-25891 affect?

CVE-2022-25891 affects shoutrrr. Severity is high (CVSS 7.5). The package github.com/containrrr/shoutrrr/pkg/util before 0.6.0 are vulnerable to Denial of Service (DoS) via the util.PartitionMessage function. Exploiting this vulnerability is possible by sending exactly 2000, 4000, or 6000 characters m

Q: How urgent is CVE-2022-25891?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2022-25891 is a high-severity flaw (CVSS 7.5) affecting shoutrrr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The package github.com/containrrr/shoutrrr/pkg/util before 0.6.0 are vulnerable to Denial of Service (DoS) via the util.PartitionMessage function. Exploiting this vulnerability is possible by sending exactly 2000, 4000, or 6000 characters messages.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2022-07-15
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: containrrr

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-07-15 20:15 UTCPublished CVE record published
2026-06-17 04:34 UTCUpdated Record last modified

containrrr shoutrrr UPGRADE

Affected: < 0.6.0

Fixed in: 0.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.6.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade shoutrrr

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-2022-25891?

shoutrrr: upgrade to 0.6.0. Exact commands for each OS are on this page.

Is CVE-2022-25891 being exploited?

CVE-2022-25891 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-2022-25891 affect?

CVE-2022-25891 affects shoutrrr. Severity is high (CVSS 7.5). The package github.com/containrrr/shoutrrr/pkg/util before 0.6.0 are vulnerable to Denial of Service (DoS) via the util.PartitionMessage function. Exploiting this vulnerability is possible by sending exactly 2000, 4000, or 6000 characters m

How urgent is CVE-2022-25891?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

GitHub vulnerabilities

References

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