CVE-2026-114456

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreHIGH confidence

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

Score 6.5 from GitHub Security Advisory (severity: MODERATE) published 2026-11-04. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-116883 (ENISA EUVD) · GHSA-crcx-4c4m-p23p (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
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: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Multiple Snowflake client drivers implementing the authenticator=externalbrowser single sign-on flow could have allowed an attacker to interfere with a user's login attempt through weaknesses in the local loopback callback listener used to receive the identity provider's response. The listener reflected an arbitrary request's Origin header into its CORS response headers and accepted the first token-bearing request it received during the login window without verifying a CSRF state value bound to that specific login attempt. An attacker able to reach the listener during an active login might have leveraged this to submit a forged callback response, causing the authentication attempt to fail. The fix is available in Snowflake Connector for Python 4.8.0, Snowflake Go Driver v2.3.0, Snowflake JDBC Driver 4.4.0 (including the snowflake-jdbc-fips and snowflake-jdbc-thin artifacts), Snowflake Node.js Driver 3.4.0, Snowflake Connector for .NET 6.3.0, Snowflake ODBC Driver 4.0.0, Snowflake PHP PDO Driver 4.3.0, and libsnowflakeclient 2.11.1. Go v1 users must migrate to the latest major version of the module. Users must manually upgrade.

CVSS v3
6.5
EG Score
6.5MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100

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)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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.
EPSS PROB
0.2%
EPSS %ILE
12th
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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-06). 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 every mission impact level.CISA BOD 26-04: 60 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 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). 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)60 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 partial (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

November 4, 2026

Last Modified

November 6, 2026

Advisory Details (8)

Auto-updated Nov 6, 2026
Patch available. Sources: github_release.
GitHub release Patch Available

4.8.0

Patch available: snowflakedb/snowflake-connector-python v4.8.0

https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v4.8.0
GitHub release Patch Available

Internal Release

Patch available: snowflakedb/libsnowflakeclient v2.11.1

https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1
Web page

PHP PDO Driver for Snowflake release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-430-oct-1-2026
Web page

ODBC Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/odbc-2026#version-400-sep-30-2026
Web page

Node.js Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/nodejs-2026#version-340-september-30-2026
Web page

JDBC Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/jdbc-2026#version-440-sep-30-2026
Web page

Go Snowflake Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/golang-2026#version-230-sep-30-2026
Web page

.NET Driver release notes for 2026 | Snowflake Documentation

https://docs.snowflake.com/en/release-notes/clients-drivers/dotnet-2026#version-630-september-30-2026

Vendor Advisories for CVE-2026-114456(2)

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 7× in last 7d / 12× 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. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-11-06 21:27 UTCEchelonGraph re-scored
  7. 2026-11-06 21:27 UTCGHSA enrichmentGHSA-crcx-4c4m-p23p · GitHub severity MODERATE · GitHub CVSS 6.5
  8. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-11-04 20:28 UTCEchelonGraph re-scored
  11. 2026-11-04 20:28 UTCGHSA enrichmentGHSA-crcx-4c4m-p23p · GitHub severity MODERATE · GitHub CVSS 6.5
  12. 2026-11-04 20:16 UTCEchelonGraph re-scored
  13. 2026-11-04 20:16 UTCGHSA enrichmentGHSA-crcx-4c4m-p23p · GitHub severity MODERATE · GitHub CVSS 6.5
  14. 2026-11-04 12:27 UTCEchelonGraph re-scored
  15. 2026-11-04 12:03 UTCENISA EUVD ID recordedEUVD-2026-116883 · Source: ENISA EUVD
  16. 2026-11-04 11:32 UTCEchelonGraph re-scoredFirst assessed: 6.5 MEDIUM
  17. 2026-11-04 11:30 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-114456?
CVE-2026-114456 is a medium-severity vulnerability; its CVE record was published on November 4, 2026. Multiple Snowflake client drivers implementing the authenticator=externalbrowser single sign-on flow could have allowed an attacker to interfere with a user's login attempt through weaknesses in the local loopback callback listener used to receive the identity provider's response. The listener…
When was the CVE record for CVE-2026-114456 published?
The CVE record for CVE-2026-114456 was published on November 4, 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 6, 2026; the record at its source may have been updated since.
Is CVE-2026-114456 actively exploited?
CVE-2026-114456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-114456?
CVE-2026-114456 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-114456?
A fix for CVE-2026-114456 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-114456 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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