CVE-2025-27421
Description
Abacus is a highly scalable and stateless counting API. A critical goroutine leak vulnerability has been identified in the Abacus server's Server-Sent Events (SSE) implementation. The issue occurs when clients disconnect from the /stream endpoint, as the server fails to properly clean up resources and terminate associated goroutines. This leads to resource exhaustion where the server continues running but eventually stops accepting new SSE connections while maintaining high memory usage. The vulnerability specifically involves improper channel cleanup in the event handling mechanism, causing goroutines to remain blocked indefinitely. This vulnerability is fixed in 1.4.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/jasonlovesdoggo/abacusGo | < 0.0.0-20250302043802-898ff1204e11 | 0.0.0-20250302043802-898ff1204e11 |
Affected products
2- ghsa-coords2 versionspkg:golang/github.com/jasonlovesdoggo/abacuspkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Tumbleweed
< 0.0.0-20250302043802-898ff1204e11+ 1 more
- (no CPE)range: < 0.0.0-20250302043802-898ff1204e11
- (no CPE)range: < 0.0.20250312T181707-1.1
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-vh64-54px-qgf8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-27421ghsaADVISORY
- github.com/JasonLovesDoggo/abacus/commit/78fdb9b48b7f6d08ed0cd41077509c0a97071552ghsaWEB
- github.com/JasonLovesDoggo/abacus/commit/898ff1204e11317cc161240b660e63eed5a72b33nvdWEB
- github.com/JasonLovesDoggo/abacus/security/advisories/GHSA-vh64-54px-qgf8nvdWEB
- pkg.go.dev/vuln/GO-2025-3498ghsaWEB
News mentions
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