Ikaros authentication bypass lets attackers skip TOTP verification
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
The ikaros-dev Ikaros product, versions 1.2.0 through 1.2.5, contains an authentication bypass caused by improper authentication (CWE-287). An attacker with a valid password can skip TOTP verification by reusing the login temp token, which gives full account access, including the master administrator account.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
Ikaros 1.2.0 through 1.2.5 contains an authentication bypass vulnerability that allows attackers with a valid password to skip TOTP verification by reusing the login temp token. Attackers can present the temp token from the jwt/apply endpoint as a bearer JWT, refresh it, or use HTTP Basic login to gain full account access, including the master administrator.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| ikaros-dev | ikaros | 1.2.0 – 1.2.5 | — | No fix listed | CNA |
- ikaros Vendorikaros-dev Affected 1.2.0 – 1.2.5 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Ikaros.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Timeline
- 2026-10-13 Threatist record created from CVE-2026-110097
- 2026-10-13 Alias added: GHSA-hj5g-wfrp-6x6g
- 2026-10-14 CISA SSVC decision points changed
- 2026-10-14 Priority changed: MEDIUM → HIGH
References
Other 4
- https://github.com/ikaros-dev/ikaros/blob/v1.2.5/server/src/main/java/run/ikaros/server/security/authentication/jwt/JwtAuthenticationProvider.java#L57-L112
- https://github.com/ikaros-dev/ikaros/blob/v1.2.5/server/src/main/java/run/ikaros/server/security/authentication/jwt/JwtAuthenticationFilter.java#L30-L46
- https://github.com/ikaros-dev/ikaros/blob/v1.2.5/server/src/main/java/run/ikaros/server/security/SecurityEndpoint.java#L80-L118
- v1.2.5 Release Notes
Sources
- CVE-2026-110097 · CVE Program
- CVE-2026-110097 · NVD
- FIRST EPSS
- GHSA-hj5g-wfrp-6x6g · GitHub Advisory Database · CC BY 4.0
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