CVE-2026-100351

HIGHPre-NVD 7.47.4
EchelonGraph scoreHIGH confidence

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

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-10-15. A secondary CVSS source baseline 7.4; sources differ by 0.0.

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

Also known asEUVD-2026-102160 (ENISA EUVD) · GHSA-23vg-4cjm-66q5 (GitHub Security Advisories)Source: ENISA EUVD

7.4EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.4Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

kin-openapi is a Go project for handling OpenAPI files. From 0.144.0 until 0.147.0, openapi3filter.ValidationHandler validates an operation selected from decoded URL.Path while a downstream gorilla/mux router configured with UseEncodedPath can dispatch a different operation selected from URL.RawPath. When a public exact route and a protected parameterized route use the same method and overlap after decoding, an unauthenticated remote request containing an encoded path separator can be validated as public and then dispatched to the protected handler without invoking the configured AuthenticationFunc. The reachable path parameter is constrained to an encoded representation that decodes to the public literal route, and proxies that canonicalize the URI before forwarding prevent this specific mismatch. This issue is fixed in version 0.147.0.

CVSS v3
7.4
EG Score
7.4HIGHhigh confidence
EG Risk
49
EG Risk 49/100

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)
Severity74% × 45%
Impact severity (EG Severity): CVSS 7.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
42nd
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 (7.4): severity, escalated by confirmed exploitation. This CVE's 7.4 is its impact severity (EG Severity), not escalated.

EG Severity
7.4 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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, Track* at medium and Attend at high mission impact.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, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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 Vulnrichment) · Technical impact total (CISA Vulnrichment). 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 15, 2026

Last Modified

October 15, 2026

Advisory Details (3)

Auto-updated Oct 15, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

v0.147.0

Patch available: getkin/kin-openapi v0.147.0

https://github.com/getkin/kin-openapi/releases/tag/v0.147.0
GitHub commit Patch Available

commit eda80e2676e9 (getkin/kin-openapi)

Patch available: getkin/kin-openapi v0.147.0 (contains commit eda80e2676e9)

https://github.com/getkin/kin-openapi/commit/eda80e2676e9f577ceed2dd80e64f16083edb041
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

ValidationHandler security-requirement bypass via encoded-path operation confusion · Advisory · getkin/kin-openapi · GitHub

https://github.com/getkin/kin-openapi/security/advisories/GHSA-23vg-4cjm-66q5

Vendor Advisories for CVE-2026-100351(5)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatgrafana13-1-main-13.1.8-0.3.hum12026-10-21redhat
redhatgrafana13-2-main-13.2.3-0.3.hum12026-10-19redhat
redhathugo-main-0.168.0-0.1.hum12026-10-14redhat
redhatgrafana12-4-main-12.4.12-0.4.hum12026-10-06redhat
gogithub.com/getkin/kin-openapi @ 0.147.0 (fixes >= 0.144.0, < 0.147.0)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/getkin/kin-openapi—
  • 0.144.0 up to 0.147.0: fixed in 0.147.0
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 29× 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. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-11-01 08:01 UTCGHSA enrichmentGHSA-23vg-4cjm-66q5 · GitHub severity HIGH · GitHub CVSS 7.4
  3. 2026-11-01 08:01 UTCEG score recompute
  4. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-10-30 15:21 UTCEG score recompute
  7. 2026-10-30 15:21 UTCVendor advisory
  8. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-10-25 15:58 UTCEG score recompute
  14. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-23 04:25 UTCEG score recompute
  17. 2026-10-23 04:25 UTCVendor advisory
  18. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-10-18 05:11 UTCEG score recompute
  24. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.5% · 40th percentile
Show 4 more
  1. 2026-10-15 16:38 UTCEG score recompute
  2. 2026-10-15 16:23 UTCEG score recompute
  3. 2026-10-15 15:58 UTCEG score recomputeFirst assessed: 7.4 HIGH
  4. 2026-10-15 15:57 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-100351?
CVE-2026-100351 is a high-severity vulnerability; its CVE record was published on October 15, 2026. kin-openapi is a Go project for handling OpenAPI files. From 0.144.0 until 0.147.0, openapi3filter.ValidationHandler validates an operation selected from decoded URL.Path while a downstream gorilla/mux router configured with UseEncodedPath can dispatch a different operation selected from…
When was the CVE record for CVE-2026-100351 published?
The CVE record for CVE-2026-100351 was published on October 15, 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 15, 2026; the record at its source may have been updated since.
Is CVE-2026-100351 actively exploited?
CVE-2026-100351 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100351?
CVE-2026-100351 has a CVSS base score of 7.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100351?
A fix for CVE-2026-100351 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100351 are linked in the Vendor Advisories panel on this page.

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