CVE-2026-19248: qt Uncontrolled Recursion
CVSS: 7.1v4.0HighAwaiting analysis
AliasesRHSA-2026:68801UBUNTU-CVE-2026-19248DEBIAN-CVE-2026-19248
Published 16-09-2026Last modified 16-09-2026
Vulnerability summary
CVE-2026-19248 is a high (CVSS 7.1) Uncontrolled Recursion vulnerability in qt. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.
CVSS score
7.1/10
010
High · v4.0 (CVE.org)EPSS score
0.42%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 16-09-2026PublishedVulnerability first disclosed.
- 16-09-2026Last modifiedVulnerability information updated.
Description
QDomDocument XML parsing is vulnerable to a remotely-triggerable denial-of-service crash when processing untrusted input.
CVSS metrics
5 scores · 5 sources · 2 versionsHigh 7.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:N/R:U/V:D/RE:LSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:N/R:U/V:D/RE:L
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:L/U:X
- NVDNIST7.1HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:L/U:X
Medium 6.5Preferred score · OSV · Red hat (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesSingle source
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
+0.01 pp
From 0.41% on 20-09-2026
20-09-202620-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat12 products
- qt5-qtbase< 0:5.15.18-5.2.hum1
- qt5-qtbase-common< 0:5.15.18-5.2.hum1
- qt5-qtbase-devel< 0:5.15.18-5.2.hum1
- qt5-qtbase-examples< 0:5.15.18-5.2.hum1
- qt5-qtbase-gui< 0:5.15.18-5.2.hum1
Debian2 products
- qt6-baseAll versions (No fix recorded) | < 6.11.2+dfsg-5
- qtbase-opensource-srcAll versions (No fix recorded) | < 5.15.19+dfsg-5
Ubuntu2 products
- qt6-baseAll versions (No fix recorded)
- qtbase-opensource-srcAll versions (No fix recorded)
Qt1 product
- qt≥ 2.2.0, ≤ 6.8.8 | ≥ 6.9.0, ≤ 6.11.1
4 vendors · 17 products
References
13 links- images.redhat.comARTICLE
