Security readout for executives and security teams
Plain-English summary
CVE-2022-25891 can make software using the Go shoutrrr utility library crash or become unavailable when certain message lengths are processed. The impact is availability only, not data theft or code execution. The vulnerable package is before version 0.6.0, and the provided sources indicate the issue was fixed in the v0.6.0 release.
Executive priority
Prioritize remediation where shoutrrr is used in internet-facing alerting, notification, webhook, or user-message flows. The risk is service disruption rather than compromise, but unauthenticated availability impact makes patching important for customer-facing systems.
Technical view
The flaw is in github.com/containrrr/shoutrrr/pkg/util before 0.6.0, specifically util.PartitionMessage. Certain boundary-length messages can trigger a denial of service. CVSS 3.1 is 7.5 high, with network attack vector, low complexity, no privileges, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is likely limited to Go applications that import affected shoutrrr versions and process attacker-controlled or externally influenced message content through the vulnerable utility path. The source bundle does not provide CPEs or a full affected-version matrix beyond “before 0.6.0.”
Exploitation context
The provided CVSS vector indicates remote unauthenticated exploitation may be possible where an application exposes message processing to untrusted input. The bundle does not show CISA KEV listing or active exploitation evidence. Treat exploitation status as unconfirmed rather than known in the wild.
Researcher notes
The strongest evidence points to a narrow DoS bug in PartitionMessage fixed through the upstream issue, pull request, commit, and v0.6.0 release. Evidence is incomplete for exploit prevalence, downstream products, and exact vulnerable release ranges beyond the stated pre-0.6.0 condition.
Mitigation direction
- Upgrade github.com/containrrr/shoutrrr to version 0.6.0 or later.
- Confirm dependency locks do not retain a pre-0.6.0 transitive version.
- Limit and validate untrusted message lengths before notification processing.
- Apply rate limiting around public message ingestion paths.
- Monitor upstream shoutrrr guidance for any later corrections.
Validation and detection
- Search Go module files and lockfiles for github.com/containrrr/shoutrrr versions.
- Identify code paths that pass external message content into shoutrrr utilities.
- Verify production builds resolve shoutrrr at 0.6.0 or later.
- Review logs for unexplained crashes or availability errors in notification workflows.
- Confirm tests cover boundary-length notification messages safely.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2022-25891 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Source materials
- CVE List V5 sourceCVE List V5
- https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMCONTAINRRRSHOUTRRRPKGUTIL-2849059CVE reference · x_refsource_MISC
- https://github.com/containrrr/shoutrrr/issues/240CVE reference · x_refsource_MISC
- https://github.com/containrrr/shoutrrr/pull/242CVE reference · x_refsource_MISC
- https://github.com/containrrr/shoutrrr/commit/6a27056f9d7522a8b493216195cb7634bf4b5c42CVE reference · x_refsource_MISC
- https://github.com/containrrr/shoutrrr/releases/tag/v0.6.0CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.