Firebase Authentication < 1.7.1 - Unauthenticated Account Takeover via Firebase Email Claim
Priority LOW 38CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
The Firebase Authentication WordPress plugin before 1.7.1 does not require the email address in an authentication token to be verified before matching it to a WordPress account and issuing a session, allowing unauthenticated attackers to log in as any user, including administrators.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00468 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Firebase Authentication (Unknown): 1.7.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Firebase Authentication | before 1.7.1 | 1.7.1 | Patch available | CNA |
- Firebase Authentication VendorUnknown Affected before 1.7.1 Fixed in 1.7.1 Patch available CNA
Remediation
- Fix · CNA Firebase Authentication (Unknown) Fixed in 1.7.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-76793
- 2026-10-03 Alias added: GHSA-3hq2-mp89-6vp5
References
Sources
- CVE-2026-76793 · CVE Program
- CVE-2026-76793 · NVD
- FIRST EPSS
- GHSA-3hq2-mp89-6vp5 · GitHub Advisory Database · CC BY 4.0
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