Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-102877 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.4 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L

CNA: [email protected]CVSS-B:4.4 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/getfider/fider	[email protected]	Vendor
https://github.com/getfider/fider/blob/v0.37.0/app/pkg/validate/general.go	[email protected]	Source CodeVendor
https://github.com/getfider/fider/blob/v0.37.0/app/services/httpclient/httpclient.go	[email protected]	Source CodeVendor
https://github.com/getfider/fider/commit/45f5627b9fd15b912fb9092635c863fb4c91dd69	[email protected]	Source CodeVendor
https://github.com/getfider/fider/releases/tag/v0.38.0	[email protected]	Release NotesVendor
https://github.com/getfider/fider/security/advisories/GHSA-whx4-hxwq-qgjh	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/fider-before-0.38.0-ssrf-via-dns-rebinding-in-webhook-validation	[email protected]	AdvisoryBundleRemedy

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-918	Server-Side Request Forgery (SSRF)	[email protected]

Affected Products

Product	Versions
Fider	<= 0.37.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 0.38.0moderate effort Workaround:low effort Set ALLOW_PRIVATE_NETWORK_TARGETS=true to disable the SSRF guard. This is only recommended for trusted single-tenant installations.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 30, 2026	CVE Modified	CISA-ADP
Sep 29, 2026	New CVE Received	[email protected]