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CVE-2026-12034

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux...

8.3 HighFix available

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.18%Up 0.1 points since Jun 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.3

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Record
CVE-2026-12034
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2026-36354 8.3

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Record
EUVD-2026-36354
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-cc2r-m9h8-v7mj 8.3

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux...

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Record
GHSA-cc2r-m9h8-v7mj
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
NVD 8.3

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Record
CVE-2026-12034
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSVDEBIAN-CVE-2026-12034 8.3

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Record
DEBIAN-CVE-2026-12034
CVSS 3.1
8.3 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2026:11029-1 No score

chromedriver-149.0.7827.114-1.1 on GA media

These are all security issues fixed in the chromedriver-149.0.7827.114-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11029-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20980-1 No score

Security update for chromium

This update for chromium fixes the following issues:

Changes in chromium:

Chromium 149.0.7827.114 (boo#1268158):

  • CVE-2026-12007: Use after free Core
  • CVE-2026-12008: Use after free DigitalCredentials
  • CVE-2026-12009: Insufficient validation of untrusted input Accessibility
  • CVE-2026-12010: Heap buffer overflow GPU
  • CVE-2026-12011: Use after free WebMIDI
  • CVE-2026-12012: Use after free Network
  • CVE-2026-12013: Use after free Media
  • CVE-2026-12014: Use after free Cast
  • CVE-2026-12015: Use after free Autofill
  • CVE-2026-12016: Insufficient validation of untrusted input DevTools
  • CVE-2026-12017: Insufficient validation of untrusted input Extensions
  • CVE-2026-12018: Inappropriate implementation Mojo
  • CVE-2026-12019: Out of bounds write Codecs
  • CVE-2026-12020: Use after free Autofill
  • CVE-2026-12022: Race Safe Browsing
  • CVE-2026-12023: Use after free GPU
  • CVE-2026-12024: Insufficient policy enforcement DevTools
  • CVE-2026-12025: Insufficient validation of untrusted input Network
  • CVE-2026-12026: Out of bounds read Video
  • CVE-2026-12027: Insufficient policy enforcement Headless
  • CVE-2026-12028: Use after free GPU
  • CVE-2026-12029: Use after free Video
  • CVE-2026-12030: Heap buffer overflow GPU
  • CVE-2026-12031: Inappropriate implementation Views
  • CVE-2026-12032: Inappropriate implementation Passwords
  • CVE-2026-12033: Out of bounds read VideoCapture
  • CVE-2026-12034: Insufficient validation of untrusted input Linux Toolkit Theming
  • CVE-2026-12035: Use after free Views
Record
openSUSE-SU-2026:20980-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:21135-1 No score

Security update for chromium

This update for chromium fixes the following issues:

Changes in chromium:

  • Chromium 149.0.7827.155 (boo#1268373):

    • CVE-2026-12437: Use after free in WebShare
    • CVE-2026-12438: Inappropriate implementation in WebView
    • CVE-2026-12439: Use after free in Digital Credentials
    • CVE-2026-12440: Use after free in DigitalCredentials
    • CVE-2026-12441: Use after free in File Input
    • CVE-2026-12442: Use after free in Passwords
    • CVE-2026-12443: Use after free in Web Authentication
    • CVE-2026-12444: Out of bounds read in Chromoting
    • CVE-2026-12445: Use after free in Extensions
    • CVE-2026-12446: Insufficient data validation in Passwords
    • CVE-2026-12447: Heap buffer overflow in WebRTC
    • CVE-2026-12448: Inappropriate implementation in WebView
    • CVE-2026-12449: Use after free in Chromoting
    • CVE-2026-12450: Inappropriate implementation in Media
    • CVE-2026-12451: Use after free in DigitalCredentials
    • CVE-2026-12452: Use after free in Downloads
    • CVE-2026-12453: Insufficient validation of untrusted input in Input
    • CVE-2026-12454: Race in Safe Browsing
    • CVE-2026-12455: Use after free in Tab Strip
    • CVE-2026-12456: Insufficient validation of untrusted input in Extensions
    • CVE-2026-12457: Insufficient data validation in Extensions
    • CVE-2026-12458: Incorrect security UI in Passwords
    • CVE-2026-12459: Inappropriate implementation in Serial
    • CVE-2026-12460: Insufficient policy enforcement in File System Access
    • CVE-2026-12461: Out of bounds read in WebRTC
    • CVE-2026-12462: Use after free in Media
    • CVE-2026-12463: Inappropriate implementation in Views
    • CVE-2026-12464: Use after free in Browser
    • CVE-2026-12465: Insufficient validation of untrusted input in Metrics
    • CVE-2026-12466: Heap buffer overflow in WebRTC
    • CVE-2026-12467: Use after free in Extensions
    • CVE-2026-12468: Inappropriate implementation in Updater
    • CVE-2026-12469: Uninitialized Use in GPU

  • Chromium 149.0.7827.114 (boo#1268158):

    • CVE-2026-12007: Use after free Core
    • CVE-2026-12008: Use after free DigitalCredentials
    • CVE-2026-12009: Insufficient validation of untrusted input Accessibility
    • CVE-2026-12010: Heap buffer overflow GPU
    • CVE-2026-12011: Use after free WebMIDI
    • CVE-2026-12012: Use after free Network
    • CVE-2026-12013: Use after free Media
    • CVE-2026-12014: Use after free Cast
    • CVE-2026-12015: Use after free Autofill
    • CVE-2026-12016: Insufficient validation of untrusted input DevTools
    • CVE-2026-12017: Insufficient validation of untrusted input Extensions
    • CVE-2026-12018: Inappropriate implementation Mojo
    • CVE-2026-12019: Out of bounds write Codecs
    • CVE-2026-12020: Use after free Autofill
    • CVE-2026-12022: Race Safe Browsing
    • CVE-2026-12023: Use after free GPU
    • CVE-2026-12024: Insufficient policy enforcement DevTools
    • CVE-2026-12025: Insufficient validation of untrusted input Network
    • CVE-2026-12026: Out of bounds read Video
    • CVE-2026-12027: Insufficient policy enforcement Headless
    • CVE-2026-12028: Use after free GPU
    • CVE-2026-12029: Use after free Video
    • CVE-2026-12030: Heap buffer overflow GPU
    • CVE-2026-12031: Inappropriate implementation Views
    • CVE-2026-12032: Inappropriate implementation Passwords
    • CVE-2026-12033: Out of bounds read VideoCapture
    • CVE-2026-12034: Insufficient validation of untrusted input Linux Toolkit Theming
    • CVE-2026-12035: Use after free View

  • Chromium 149.0.7827.102 (boo#1267911):

    • CVE-2026-11628: Use after free in Ozone
    • CVE-2026-11629: Use after free in Ozone
    • CVE-2026-11630: Use after free in File Input
    • CVE-2026-11631: Use after free in Aura
    • CVE-2026-11632: Use after free in TabStrip
    • CVE-2026-11633: Use after free in Bluetooth
    • CVE-2026-11634: Use after free in Gamepad
    • CVE-2026-11635: Use after free in Bluetooth
    • CVE-2026-11636: Use after free in Autofill
    • CVE-2026-11637: Use after free in Views
    • CVE-2026-11638: Use after…
Record
openSUSE-SU-2026:21135-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
chromium
Debian:12
 before 149.0.7827.114-1~deb12u1, plus listed versions
113.0.5672.126-1114.0.5735.106-1114.0.5735.106-1~deb11u1114.0.5735.106-1~deb12u1114.0.5735.133-1
Show 45 moreShow less
114.0.5735.133-1~deb11u1114.0.5735.133-1~deb12u1114.0.5735.198-1114.0.5735.198-1~deb11u1114.0.5735.198-1~deb12u1114.0.5735.90-1114.0.5735.90-2114.0.5735.90-2~deb11u1114.0.5735.90-2~deb12u1115.0.5790.102-1115.0.5790.102-2115.0.5790.170-1115.0.5790.170-1~deb11u1115.0.5790.170-1~deb12u1115.0.5790.98-1115.0.5790.98-1~deb11u1115.0.5790.98-1~deb12u1115.0.5790.98-2116.0.5845.110-1116.0.5845.110-1~deb11u1116.0.5845.110-1~deb12u1116.0.5845.110-2116.0.5845.140-1116.0.5845.140-1~deb11u1116.0.5845.140-1~deb12u1116.0.5845.180-1116.0.5845.180-1~deb11u1116.0.5845.180-1~deb12u1116.0.5845.96-1116.0.5845.96-1~deb11u1116.0.5845.96-1~deb12u1116.0.5845.96-2117.0.5938.132-1117.0.5938.132-1~deb11u1117.0.5938.132-1~deb12u1117.0.5938.132-2117.0.5938.149-1117.0.5938.149-1~deb11u1117.0.5938.149-1~deb12u1117.0.5938.62-1117.0.5938.62-1~deb11u1117.0.5938.62-1~deb12u1117.0.5938.92-1118.0.5993.117-1118.0.5993.117-1~deb11u1
149.0.7827.114-1~deb12u1
chromium
Debian:13
 before 149.0.7827.114-1~deb13u1, plus listed versions
138.0.7204.183-1139.0.7258.127-1139.0.7258.127-1~deb12u1139.0.7258.127-1~deb13u1139.0.7258.127-2
Show 45 moreShow less
139.0.7258.138-1139.0.7258.138-1~deb12u1139.0.7258.138-1~deb13u1139.0.7258.154-1139.0.7258.154-1~deb12u1139.0.7258.154-1~deb13u1139.0.7258.66-1139.0.7258.66-1~deb12u1140.0.7339.127-1140.0.7339.127-1~deb12u1140.0.7339.127-1~deb13u1140.0.7339.185-1140.0.7339.185-1~deb12u1140.0.7339.185-1~deb13u1140.0.7339.207-1140.0.7339.207-1~deb12u1140.0.7339.207-1~deb13u1140.0.7339.80-1140.0.7339.80-1~deb12u1140.0.7339.80-1~deb13u1141.0.7390.107-1141.0.7390.107-1~deb12u1141.0.7390.107-1~deb13u1141.0.7390.122-1141.0.7390.122-1~deb12u1141.0.7390.122-1~deb13u1141.0.7390.54-1141.0.7390.54-1~deb12u1141.0.7390.54-1~deb13u1141.0.7390.65-1141.0.7390.65-1~deb12u1141.0.7390.65-1~deb13u1142.0.7444.134-1142.0.7444.134-1~deb12u1142.0.7444.134-1~deb13u1142.0.7444.162-1142.0.7444.162-1~deb12u1142.0.7444.162-1~deb13u1142.0.7444.175-1142.0.7444.175-1~deb12u1142.0.7444.175-1~deb13u1142.0.7444.59-1142.0.7444.59-1~deb12u1142.0.7444.59-1~deb13u1143.0.7499.109-1
149.0.7827.114-1~deb13u1
chromium
Debian:14
 before 149.0.7827.114-1, plus listed versions
138.0.7204.183-1139.0.7258.127-1139.0.7258.127-1~deb12u1139.0.7258.127-1~deb13u1139.0.7258.127-2
Show 45 moreShow less
139.0.7258.138-1139.0.7258.138-1~deb12u1139.0.7258.138-1~deb13u1139.0.7258.154-1139.0.7258.154-1~deb12u1139.0.7258.154-1~deb13u1139.0.7258.66-1139.0.7258.66-1~deb12u1140.0.7339.127-1140.0.7339.127-1~deb12u1140.0.7339.127-1~deb13u1140.0.7339.185-1140.0.7339.185-1~deb12u1140.0.7339.185-1~deb13u1140.0.7339.207-1140.0.7339.207-1~deb12u1140.0.7339.207-1~deb13u1140.0.7339.80-1140.0.7339.80-1~deb12u1140.0.7339.80-1~deb13u1141.0.7390.107-1141.0.7390.107-1~deb12u1141.0.7390.107-1~deb13u1141.0.7390.122-1141.0.7390.122-1~deb12u1141.0.7390.122-1~deb13u1141.0.7390.54-1141.0.7390.54-1~deb12u1141.0.7390.54-1~deb13u1141.0.7390.65-1141.0.7390.65-1~deb12u1141.0.7390.65-1~deb13u1142.0.7444.134-1142.0.7444.134-1~deb12u1142.0.7444.134-1~deb13u1142.0.7444.162-1142.0.7444.162-1~deb12u1142.0.7444.162-1~deb13u1142.0.7444.175-1142.0.7444.175-1~deb12u1142.0.7444.175-1~deb13u1142.0.7444.59-1142.0.7444.59-1~deb12u1142.0.7444.59-1~deb13u1143.0.7499.109-1
149.0.7827.114-1
chromium
openSUSE:Tumbleweed
From an advisory covering 28 CVEs
 before 149.0.7827.114-1.1
149.0.7827.114-1.1
chromium
openSUSE:Leap 16.0
From an advisory covering 564 CVEs
 before 149.0.7827.155-bp160.1.1
149.0.7827.155-bp160.1.1

History

History
RecordedChangedSources
affected, facts
affected
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-12034 is a high vulnerability (CVSS 8.3) in Google Chrome, published June 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in chromium 149.0.7827.114-1~deb12u1.

References

Show 194 moreShow less
This page doesn't list everything

Left out here: 490 versions, 374 references and the rest of 1 source description. The JSON record has them.

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