CVE-2026-102877: getfider fider · Server-Side Request Forgery (SSRF)
Affects getfider fiderSource CVE Database V5
Not known to be exploited · CVSS 2.1 Low : upgrade to 0.38.0 when convenient.
Data as of 12 Nov 2026, 23:24 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.38.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Upgrade fider and getfider/fider to 0.38.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| getfiderfider | Affected
| Fixed in
|
GitHubgetfider/fiderpkg:github/getfider/fiderOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Fider to version 0.38.0 or later, where this SSRF vulnerability has been addressed. Patch status is confirmed by the versioning information indicating that versions before 0.38.0 are affected and 0.38.0 is the fixed version. No additional vendor advisory content is provided, so check the vendor's official channels for the latest remediation guidance.
Description
Fider versions before 0.38.0 have a server-side request forgery (SSRF) vulnerability caused by a time-of-check time-of-use gap in URL validation for webhooks and custom OAuth provider endpoints. This flaw allows administrators with DNS control to perform DNS rebinding attacks, potentially causing the Fider server to send requests to internal services or cloud metadata endpoints. The vulnerability has a low severity score and no known exploits in the wild.
References
- github.com/getfider/fider/security/advisories/GHSA-whx4-hxwq-qgjh (opens in a new tab)
- github.com/getfider/fider/commit/45f5627b9fd15b912fb9092635c863fb4c91dd69 (opens in a new tab)
- github.com/getfider/fider/blob/v0.37.0/app/pkg/validate/general.go (opens in a new tab)
- github.com/getfider/fider/blob/v0.37.0/app/services/httpclient/httpclient.go (opens in a new tab)
- github.com/getfider/fider/releases/tag/v0.38.0 (opens in a new tab)
- github.com/getfider/fider (opens in a new tab)
- vulncheck.com/advisories/fider-before-0.38.0-ssrf-via-dns-rebinding-in-webhook-validation (opens in a new tab)