Skip to main content
Public proof of conceptFix available

CVE-2018-12293

A public proof of concept exists; no exploitation attested.

  • Published2018-06-19
  • WeaknessCWE-190 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.3 and WPE WebKit prior to version 2.20.1, is vulnerable to a heap-based buffer overflow triggered by an integer overflow, which could be abused by crafted HTML content.

Timeline

dates in UTC
  1. 2018-08-16Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-12293?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-12293?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
16.4= 16.04no fix published
17.10= 17.10no fix published
18.4= 18.04no fix published
Webkitgtk webkitgtk\+
BranchAffectedFixed in
2.20< 2.20.32.20.3
Wpewebkit wpe webkit
BranchAffectedFixed in
2.20< 2.20.12.20.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • qtwebkit-opensource-srcUbuntu:24.04:LTSall versions · no fixed version listed
  • qtwebkit-opensource-srcUbuntu:22.04:LTSall versions · no fixed version listed
  • qtwebkit-opensource-srcUbuntu:20.04:LTSall versions · no fixed version listed
  • webkit2gtkUbuntu:18.04:LTSall versions · fixed in 2.20.3-0ubuntu0.18.04.1
  • webkit2gtkUbuntu:16.04:LTSall versions · fixed in 2.20.3-0ubuntu0.16.04.1
  • webkit2gtkDebian:14all versions · fixed in 2.20.3-1
  • webkit2gtkDebian:13all versions · fixed in 2.20.3-1
  • webkit2gtkDebian:12all versions · fixed in 2.20.3-1

2 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-45205
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.08.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • NVDweakness (CWE)CWE-190, CWE-787read 2026-10-23
  • FIRST EPSSEPSS score10.0 %read 2026-11-02
  • Exploit-DBdetectionread 2026-11-02
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2018-06-19
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-12293?

The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.3 and WPE WebKit prior to version 2.20.1, is vulnerable to a heap-based buffer overflow triggered by an integer overflow, which could be abused by crafted HTML content.

Is CVE-2018-12293 actively exploited?

Active exploitation of CVE-2018-12293 has not been confirmed. Its EPSS score was 10.0% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-12293?

CVE-2018-12293 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Running webkitgtk? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record