CVE-2026-123798: supertokens-core · Improper Authentication
Affects supertokens-coreSource CVE Database V5
Not known to be exploited · CVSS 8.1 High · fixed in 12.0.10 : patch supertokens-core soon.
Data as of 9 Nov 2026, 18:34 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 8.1 |
|---|
- Patch
- Available – fixed in 12.0.10, 11.4.7, 11.3.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Upgrade supertokens-core to 12.0.10, 11.4.7 or 11.3.7.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| supertokenssupertokens-core | Affected
| Fixed in
|
| supertokenssupertokens-core | Affected
| Fixed in
|
| supertokenssupertokens-core | Affected
| Fixed in
|
AI-suggested
Upgrade SuperTokens Core to version 11.3.7, 11.4.7, or 12.0.10 or later, where the vulnerability is fixed. No other mitigation is required as the fix addresses the root cause of improper signature validation.
Description
SuperTokens Core versions 11.3.0 through 11.3.6, 11.4.0 through 11.4.6, and 12.0.6 through 12.0.9 contain an improper authentication vulnerability due to incorrect SAML signature validation. The software accepts cryptographically valid signatures that reference different XML elements than those used for authentication, enabling XML Signature Wrapping attacks. This allows an attacker to impersonate another identity provider user. The issue affects both response-level and assertion-level signing and is fixed in versions 11.3.7, 11.4.7, and 12.0.10.
References
- github.com/supertokens/supertokens-core/security/advisories/GHSA-gvx2-mwmj-wwvj (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/8d06b0cfb5409c5bf505051ddfcb94d66367caae (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/9cba541ae2ed87b878d11b257bc9b8b78341f50a (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/d0773f2a6497411aeda5d4f03d3d135a2a3ae79c (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v11.3.7 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v11.4.7 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v12.0.10 (opens in a new tab)