CVE-2026-102877: Server-Side Request Forgery (SSRF) in getfider fider
Fider before 0.38.0 contains a server-side request forgery vulnerability due to a time-of-check time-of-use gap in URL validation for webhooks and custom OAuth provider endpoints. Administrators controlling DNS can perform DNS rebinding attacks to make the Fider server send requests to internal services or cloud metadata endpoints.
AI Analysis
Technical Summary
CVE-2026-102877 describes an SSRF vulnerability in Fider prior to version 0.38.0. The issue arises from a race condition between URL validation and usage, specifically in webhook and custom OAuth provider endpoint handling. Attackers controlling DNS can exploit this by performing DNS rebinding attacks, causing the server to make unauthorized requests to internal or cloud metadata services. This vulnerability is classified as low severity with a CVSS 4.0 score of 2.1.
Potential Impact
An attacker with administrative DNS control can exploit this vulnerability to induce the Fider server to send requests to internal network services or cloud metadata endpoints. This could lead to unauthorized information disclosure or interaction with internal resources. However, the overall impact is rated low due to the complexity and required privileges.
Mitigation Recommendations
No explicit patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict DNS control to trusted administrators and monitor webhook and OAuth configurations carefully.
CVE-2026-102877: Server-Side Request Forgery (SSRF) in getfider fider
Description
Fider before 0.38.0 contains a server-side request forgery vulnerability due to a time-of-check time-of-use gap in URL validation for webhooks and custom OAuth provider endpoints. Administrators controlling DNS can perform DNS rebinding attacks to make the Fider server send requests to internal services or cloud metadata endpoints.
CVSS v4.0
Score 2.1low
Affected software
getfider
fider
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-102877 describes an SSRF vulnerability in Fider prior to version 0.38.0. The issue arises from a race condition between URL validation and usage, specifically in webhook and custom OAuth provider endpoint handling. Attackers controlling DNS can exploit this by performing DNS rebinding attacks, causing the server to make unauthorized requests to internal or cloud metadata services. This vulnerability is classified as low severity with a CVSS 4.0 score of 2.1.
Potential Impact
An attacker with administrative DNS control can exploit this vulnerability to induce the Fider server to send requests to internal network services or cloud metadata endpoints. This could lead to unauthorized information disclosure or interaction with internal resources. However, the overall impact is rated low due to the complexity and required privileges.
Mitigation Recommendations
No explicit patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict DNS control to trusted administrators and monitor webhook and OAuth configurations carefully.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-29T17:33:19.099Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abc1a5e680226ef6837a599
Added to database: 09/29/2026, 20:06:54 UTC
Last enriched: 09/29/2026, 20:21:48 UTC
Last updated: 09/30/2026, 03:03:22 UTC
Views: 9
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.