CVE-2026-118340

CRITICALPre-NVD 9.69.6
EchelonGraph scoreHIGH confidence

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

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-28. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — Patch released this week

Also known asEUVD-2026-111437 (ENISA EUVD) · GHSA-768j-4cjg-pmh4 (GitHub Security Advisories)Source: ENISA EUVD

9.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Integer overflow in Skia in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)

CVSS v3
9.6
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
9.6CRITICALhigh confidence
EG Risk
43
EG Risk 43/100

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)
Severity96% × 45%
Impact severity (EG Severity): CVSS 9.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (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.
EPSS PROB
0.3%
EPSS %ILE
18th
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 (9.6): severity, escalated by confirmed exploitation. This CVE's 9.6 is its impact severity (EG Severity), not escalated.

EG Severity
9.6 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% 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 (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 27, 2026

Last Modified

November 3, 2026

Advisory Details (2)

Auto-updated Oct 28, 2026
Patch available.
Web page

Chromium

https://issues.chromium.org/issues/568936530
Web page

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_0562499947.html

Vendor Advisories for CVE-2026-118340(5)

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

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatwebkit2gtk3-0:2.54.2-2.el9_92026-11-11redhat
redhatwebkit2gtk3-0:2.54.2-2.el8_102026-11-09redhat
redhatwebkit2gtk3-0:2.54.2-0.el9_8.22026-11-04redhat

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

(4 across 3 ecosystems)
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 156.0.8078.73-1~deb13u1 (207 versions)
  • every version up to 156.0.8078.73-1: fixed in 156.0.8078.73-1
—
libskia146.20260311+dfsg-1 ... 146.20260602~git.3476902+dfsg-5 (14 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
chromium113.0.5672.126-1 ... 156.0.8078.47-1~deb13u1 (440 versions)
  • every version up to 156.0.8078.73-1~deb12u1: fixed in 156.0.8078.73-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 156.0.8078.73-1~deb12u1 (206 versions)
  • every version up to 156.0.8078.73-1~deb13u1: fixed in 156.0.8078.73-1~deb13u1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 54× 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 0.3% · 18th percentile
  2. 2026-11-13 05:03 UTCEchelonGraph re-scored
  3. 2026-11-13 05:03 UTCVendor advisory
  4. 2026-11-13 05:03 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  5. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  6. 2026-11-12 04:20 UTCEchelonGraph re-scored
  7. 2026-11-12 04:20 UTCVendor advisory
  8. 2026-11-12 04:20 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  9. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  10. 2026-11-11 03:29 UTCEchelonGraph re-scored
  11. 2026-11-11 03:29 UTCVendor advisory
  12. 2026-11-11 03:29 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  13. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  14. 2026-11-10 02:45 UTCEchelonGraph re-scored
  15. 2026-11-10 02:45 UTCVendor advisory
  16. 2026-11-10 02:45 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  17. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  18. 2026-11-09 02:02 UTCEchelonGraph re-scored
  19. 2026-11-09 02:02 UTCVendor advisory
  20. 2026-11-09 02:02 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  21. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  22. 2026-11-08 01:19 UTCEchelonGraph re-scored
  23. 2026-11-08 01:19 UTCVendor advisory
  24. 2026-11-08 01:19 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  25. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.3% · 18th percentile
Show 47 more
  1. 2026-11-07 00:36 UTCEchelonGraph re-scored
  2. 2026-11-07 00:36 UTCVendor advisory
  3. 2026-11-07 00:36 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  4. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  5. 2026-11-05 23:53 UTCEchelonGraph re-scored
  6. 2026-11-05 23:53 UTCVendor advisory
  7. 2026-11-05 23:53 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  8. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  9. 2026-11-04 23:10 UTCEchelonGraph re-scored
  10. 2026-11-04 23:10 UTCVendor advisory
  11. 2026-11-04 23:10 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  12. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  13. 2026-11-03 22:27 UTCVendor advisory
  14. 2026-11-03 22:27 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  15. 2026-11-03 21:23 UTCEchelonGraph re-scored
  16. 2026-11-03 21:23 UTCVendor advisory
  17. 2026-11-03 21:23 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  18. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-11-02 20:40 UTCEchelonGraph re-scored
  20. 2026-11-02 20:40 UTCVendor advisory
  21. 2026-11-02 20:40 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  22. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-11-01 19:56 UTCEchelonGraph re-scored
  24. 2026-11-01 19:56 UTCVendor advisory
  25. 2026-11-01 19:56 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  26. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  27. 2026-10-31 19:13 UTCEchelonGraph re-scored
  28. 2026-10-31 19:13 UTCVendor advisory
  29. 2026-10-31 19:13 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  30. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  31. 2026-10-30 18:28 UTCEchelonGraph re-scored
  32. 2026-10-30 18:28 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  33. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  34. 2026-10-29 17:46 UTCEchelonGraph re-scored
  35. 2026-10-29 17:46 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  36. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  37. 2026-10-28 18:32 UTCEchelonGraph re-scored
  38. 2026-10-28 18:32 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4 · GitHub severity CRITICAL · GitHub CVSS 9.6
  39. 2026-10-28 17:47 UTCEchelonGraph re-scored▲ 0.80
  40. 2026-10-28 17:46 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4
  41. 2026-10-28 17:44 UTCMITRE cvelistV5CVSS v3 → 9.6 · severity → CRITICAL
  42. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  43. 2026-10-28 14:28 UTCGHSA enrichmentGHSA-768j-4cjg-pmh4
  44. 2026-10-28 00:01 UTCENISA EUVD ID recordedEUVD-2026-111437 · Source: ENISA EUVD
  45. 2026-10-27 23:26 UTCNVD update
  46. 2026-10-27 23:15 UTCEchelonGraph re-scoredFirst assessed: 8.8 HIGH
  47. 2026-10-27 23:14 UTCMITRE cvelistV5first tracked

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

Frequently asked(5)

What is CVE-2026-118340?
CVE-2026-118340 is a critical-severity vulnerability; its CVE record was published on October 27, 2026. Integer overflow in Skia in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)
When was the CVE record for CVE-2026-118340 published?
The CVE record for CVE-2026-118340 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 November 3, 2026; the record at its source may have been updated since.
Is CVE-2026-118340 actively exploited?
CVE-2026-118340 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-118340?
CVE-2026-118340 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-118340?
A fix for CVE-2026-118340 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-118340 are linked in the Vendor Advisories panel on this page.

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