CVE-2026-115408

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreHIGH confidence

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

Score 5.5 from GitHub Security Advisory published 2026-10-27. A secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-110816 (ENISA EUVD) · GHSA-922w-gjph-r2q7 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
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: —CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In github.com/eclipse-keypont/crypto11/v2 versions >= 2.0.0-rc3, <= 2.0.0-rc8, the ML-KEM key-pair lookup functions (FindMLKEMKeyPair, FindMLKEMKeyPairs, FindMLKEMKeyPairsWithAttributes) locate the public half of an ML-KEM key pair by CKA_ID/CKA_LABEL and never verify it against the private key. In addition, the "ID only" fallback search runs even when the private key has no CKA_ID, so the search template reduces to the public-key class and the ML-KEM key type and the first ML-KEM public key on the token is returned. Encapsulate() on the resulting key pair encrypts the fresh shared secret to that key, so its owner — not the holder of the private key the caller looked up — can recover the secret. An attacker who can open an unauthenticated session on the token and plant a public CKK_ML_KEM object carrying the victim's CKA_ID/CKA_LABEL receives the shared secrets for encapsulations performed through the substituted key pair, compromising the confidentiality of those secrets and of everything protected by keys derived from them. The v1 module paths have no ML-KEM support and are not affected.

CVSS v3
5.5
EG Score
5.5MEDIUMhigh confidence
EG Risk
25
EG Risk 25/100

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)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0% × 40%
No KEV listing, EG-KEV tier or EPSS 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
—
EPSS %ILE
—
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 (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
Unknown (no EPSS on record)Unknown, not low: FIRST has published no EPSS probability for this CVE.
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: 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.

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

October 27, 2026

Last Modified

October 27, 2026

Advisory Details (3)

Auto-updated Oct 27, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
Web page

[Eclipse KeyPont] CVE Reservation - eclipse-keypont/crypto11 GHSA-7842-qc22-qh4x: ML-KEM key-pair lookup can bind an unrelated or attacker-planted public key, exposing encapsulated shared secrets (#490) · Issues · Eclipse Projects Security / cve-assignment · GitLab

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/490
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

ML-KEM key-pair lookup can bind an unrelated or attacker-planted public key, exposing encapsulated shared secrets · Advisory · eclipse-keypont/crypto11 · GitHub

https://github.com/eclipse-keypont/crypto11/security/advisories/GHSA-7842-qc22-qh4x
GitHub commit Patch Available

commit 8d99b73c721c (eclipse-keypont/crypto11)

Patch available: eclipse-keypont/crypto11 v2.0.0-rc9 (contains commit 8d99b73c721c)

https://github.com/eclipse-keypont/crypto11/commit/8d99b73c721c173ad85c0ca4e063c3da360a611d

Vendor Advisories for CVE-2026-115408(1)

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

Weakness Classification(1)

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 it from the CNA feed. 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). Most recent first.

  1. 2026-10-27 16:09 UTCEG score recompute
  2. 2026-10-27 16:09 UTCGHSA enrichmentGHSA-922w-gjph-r2q7 · GitHub CVSS 5.5
  3. 2026-10-27 13:01 UTCENISA EUVD ID recordedEUVD-2026-110816 · Source: ENISA EUVD
  4. 2026-10-27 12:26 UTCEG score recompute
  5. 2026-10-27 12:06 UTCEG score recomputeFirst assessed: 5.5 MEDIUM
  6. 2026-10-27 12:05 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-115408?
CVE-2026-115408 is a medium-severity vulnerability; its CVE record was published on October 27, 2026. In github.com/eclipse-keypont/crypto11/v2 versions >= 2.0.0-rc3, <= 2.0.0-rc8, the ML-KEM key-pair lookup functions (FindMLKEMKeyPair, FindMLKEMKeyPairs, FindMLKEMKeyPairsWithAttributes) locate the public half of an ML-KEM key pair by CKAID/CKALABEL and never verify it against the private key. In…
When was the CVE record for CVE-2026-115408 published?
The CVE record for CVE-2026-115408 was published on October 27, 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 October 27, 2026; the record at its source may have been updated since.
What is the CVSS score of CVE-2026-115408?
CVE-2026-115408 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-115408?
A fix for CVE-2026-115408 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-115408 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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