Allocation of Resources Without Limits or Throttling Affecting github.com/go-gitea/gitea/services/forms package, versions <1.27.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMGOGITEAGITEASERVICESFORMS-18677745
- published12 Aug 2026
- disclosed21 Jul 2026
- creditAdamKorcz
Introduced: 21 Jul 2026
CVE-2026-56657 Â (opens in a new tab)How to fix?
Upgrade github.com/go-gitea/gitea/services/forms to version 1.27.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the parseKeyString function. An attacker can exhaust server CPU and memory resources by submitting a specially crafted SSH key with a very large number of lines, causing the server to perform quadratic work and potentially take the instance offline.
Note: This is only exploitable if an authenticated user submits a maliciously large SSH key, as there is no input size limit enforced.