Parse Server is vulnerable to Server-Side Request Forgery (SSRF) via Instagram OAuth Adapter

Description

Impact

The Instagram authentication adapter allows clients to specify a custom API URL via the apiURL parameter in authData. This enables SSRF attacks and possibly authentication bypass if malicious endpoints return fake responses to validate unauthorized users.

Patches

Fixed by hardcoding the Instagram Graph API URL https://graph.instagram.com and ignoring client-provided apiURL values.

Workarounds

None.

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
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Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-12-16 22:35:40 UTC
Updated
2026-01-07 14:55:00 UTC
GitHub reviewed
2025-12-16 22:35:40 UTC
NVD published
2025-12-16

EPSS Score

Score Percentile
0.11% 29.87%

CVSS Scores

Base score Version Severity Vector
8.3 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:H)
High confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

CWEs

CWE id Name
CWE-918 Server-Side Request Forgery (SSRF)

Credits

  • yueyueL (reporter)
  • mtrezza (coordinator)
  • rhdesmond (analyst)

Affected packages (2)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm parse-server < 8.6.2 8.6.2
npm parse-server >= 9.0.0, < 9.1.1-alpha.1 9.1.1-alpha.1

References

cvelogic Threat Intelligence