CVE-2026-123804

MEDIUMPre-NVD 6.86.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 6.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-120229 (ENISA EUVD)Source: ENISA EUVD

6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

SuperTokens Core is an open source authentication server. From 7.0.0 until 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1, createNewSession can resolve a primary user before unlinkAccounts detaches a login method and then insert the session after unlink has enumerated and revoked the existing sessions. A user who controls the linked login method can exploit this race to retain a signed, database-backed, refreshable session as the former primary identity after that method is unlinked; the session persists until expiry or explicit revocation. This issue is fixed in versions 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity68% × 45%
Impact severity (EG Severity): CVSS 6.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.8): severity, escalated by confirmed exploitation. This CVE's 6.8 is its impact severity (EG Severity), not escalated.

EG Severity
6.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

November 9, 2026

Last Modified

November 12, 2026

Advisory Details (10)

Auto-updated Nov 9, 2026
Patch available. Sources: github, github_commit.
GitHub commit Patch Available

commit c950a01794cf (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v12.2.1 (contains commit c950a01794cf)

https://github.com/supertokens/supertokens-core/commit/c950a01794cf0983ebd62412976cb80756bf5dd0
GitHub commit Patch Available

commit c8b48e843b32 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v11.1.4 (contains commit c8b48e843b32)

https://github.com/supertokens/supertokens-core/commit/c8b48e843b323cd749dcb17b6b81c190e7882a43
GitHub commit Patch Available

commit c0b7f5eda208 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v11.2.4 (contains commit c0b7f5eda208)

https://github.com/supertokens/supertokens-core/commit/c0b7f5eda20840f63f6b0f171d22bd49a7a609a1
GitHub commit Patch Available

commit bb6d5f8d1b79 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v12.1.2 (contains commit bb6d5f8d1b79)

https://github.com/supertokens/supertokens-core/commit/bb6d5f8d1b79770e3cc37f214ba94c3e36e9c3b8
GitHub commit Patch Available

commit b44f1e141820 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v11.3.8 (contains commit b44f1e141820)

https://github.com/supertokens/supertokens-core/commit/b44f1e1418206f411e541501c2e5b9b147add0d9
GitHub commit Patch Available

commit b1c569ed59ff (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v12.3.1 (contains commit b1c569ed59ff)

https://github.com/supertokens/supertokens-core/commit/b1c569ed59fffe16c2f657da1754abcae47d2761
GitHub commit Patch Available

commit 5aec64aca6d7 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v12.1.2 (contains commit 5aec64aca6d7)

https://github.com/supertokens/supertokens-core/commit/5aec64aca6d765cde491658210e6922e291742fd
GitHub commit Patch Available

commit 378e1157dc26 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v12.0.11 (contains commit 378e1157dc26)

https://github.com/supertokens/supertokens-core/commit/378e1157dc26232a518d2c360ee60cf93c2fd8a2
GitHub commit Patch Available

commit 182b39454ac4 (supertokens/supertokens-core)

Patch available: supertokens/supertokens-core v12.2.1 (contains commit 182b39454ac4)

https://github.com/supertokens/supertokens-core/commit/182b39454ac44649cdef22d87f296a38a0b1a602
GitHub advisoryMentions a patch (unverified)

A session created concurrently with account unlink survives the unlink · Advisory · supertokens/supertokens-core · GitHub

https://github.com/supertokens/supertokens-core/security/advisories/GHSA-2pc4-vw9j-454c

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-11-12 22:30 UTCEchelonGraph re-scored
  3. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  4. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  6. 2026-11-09 20:00 UTCENISA EUVD ID recordedEUVD-2026-120229 · Source: ENISA EUVD
  7. 2026-11-09 19:27 UTCEchelonGraph re-scored
  8. 2026-11-09 19:00 UTCEchelonGraph re-scoredFirst assessed: 6.8 MEDIUM
  9. 2026-11-09 18:59 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-123804?
CVE-2026-123804 is a medium-severity vulnerability; its CVE record was published on November 9, 2026. SuperTokens Core is an open source authentication server. From 7.0.0 until 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1, createNewSession can resolve a primary user before unlinkAccounts detaches a login method and then insert the session after unlink has enumerated…
When was the CVE record for CVE-2026-123804 published?
The CVE record for CVE-2026-123804 was published on November 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-123804 actively exploited?
CVE-2026-123804 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-123804?
CVE-2026-123804 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-123804?
A fix for CVE-2026-123804 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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