CVE-2026-107276

MEDIUMPre-NVD 6.36.3
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: secondary
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 6.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

MISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request's deletion takes effect.

Preconditions:

  • The target MISP instance has email OTP login enabled.
  • The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).
  • The attacker can issue two HTTP POST requests in close temporal proximity.

Impact:

  • The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.
  • This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.

Affected versions: <2.5.48

CVSS v3
6.3
EG Score
6.3MEDIUMlow confidence
EG Risk
28
EG Risk 28/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 7, 2026

Last Modified

October 7, 2026

Advisory Details (1)

Auto-updated Oct 7, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit ba95e67d5 (MISP/MISP)

Patch available: MISP/MISP v2.5.48 (contains commit ba95e67d5)

https://github.com/MISP/MISP/commit/ba95e67d5

Vendor Advisories for CVE-2026-107276(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

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

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-07 21:25 UTCEG score recompute
  2. 2026-10-07 21:25 UTCGHSA enrichment
  3. 2026-10-07 20:36 UTCEG score recompute
  4. 2026-10-07 20:36 UTCGHSA enrichment
  5. 2026-10-07 16:40 UTCEG score recompute
  6. 2026-10-07 15:46 UTCEG score recompute
  7. 2026-10-07 15:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-107276?
CVE-2026-107276 is a medium vulnerability published on October 7, 2026. MISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store,…
When was CVE-2026-107276 disclosed?
CVE-2026-107276 was first published on October 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-107276?
CVE-2026-107276 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-107276?
A fix for CVE-2026-107276 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-107276 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-107276

Explore →

Is Your Infrastructure Affected by CVE-2026-107276?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs