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CVE-2020-26254

23
FAUCET Score

CVE-2020-26254 affects the omniauth-apple RubyGem, an OmniAuth strategy for "Sign In with Apple," specifically versions prior to 1.0.1. This vulnerability allows attackers to forge their email address during authentication, potentially impersonating other users if applications rely on the info.email field for identification. With a CVSS score of 7.7 (HIGH), it presents a significant risk due to its low attack complexity and high impact on integrity (I:H), though it requires prior authentication (PR:L). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:omniauth-apple_project:omniauth-apple:*:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 65th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: omniauth-appleFixed in: 1.0.1

Vendor Advisories (1)

rubygemsGHSA-49r3-2549-3633high

omniauth-apple allows attacker to fake their email address during authentication

Dec 8, 2020

References

github.com / nhosoya/omniauth-apple/blob/master/CHANGELOG.md
Release NotesThird Party Advisory
github.com / nhosoya/omniauth-apple/commit/b37d5409213adae2ca06a67fec14c8d3d07d9016
PatchThird Party Advisory
github.com / nhosoya/omniauth-apple/security/advisories/GHSA-49r3-2549-3633
ExploitMitigationThird Party Advisory