CVE-2026-88807
libXrender RenderQueryPictFormats Reply Heap-based Buffer Overflow
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Active
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
libXrender RenderQueryPictFormats Reply Heap-based Buffer Overflow
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
CVE-2026-88807- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2026-83916
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
EUVD-2026-83916- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-52cp-fjgx-xr28
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious...
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
GHSA-52cp-fjgx-xr28- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-122
- Updated
- 2026-11-02
NVD
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
CVE-2026-88807- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-122
- Updated
- 2026-11-02
OSVALPINE-CVE-2026-88807
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
ALPINE-CVE-2026-88807- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSV
libXrender RenderQueryPictFormats Reply Heap-based Buffer Overflow
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
CVE-2026-88807- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-122
- Updated
- 2026-11-02
Show 22 moreShow less
OSVDEBIAN-CVE-2026-88807
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
DEBIAN-CVE-2026-88807- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVOESA-2026-4476
libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.(CVE-2026-88807)
- Record
OESA-2026-4476- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVOESA-2026-4477
libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.(CVE-2026-88807)
- Record
OESA-2026-4477- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVOESA-2026-4478
libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.(CVE-2026-88807)
- Record
OESA-2026-4478- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVOESA-2026-4479
libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.(CVE-2026-88807)
- Record
OESA-2026-4479- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRLSA-2026:91003
Important: libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
- libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Record
RLSA-2026:91003- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRLSA-2026:91057
Important: libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
- libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Record
RLSA-2026:91057- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRLSA-2026:91267
Important: libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
- libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Record
RLSA-2026:91267- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-88807
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
UBUNTU-CVE-2026-88807- CVSS 4.0
- 8.9 High
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-02
OSVALSA-2026:91003 No score
Important: libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
- libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Record
ALSA-2026:91003- Updated
- 2026-11-02
OSVALSA-2026:91057 No score
Important: libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
- libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Record
ALSA-2026:91057- Updated
- 2026-11-02
OSVALSA-2026:91267 No score
Important: libXrender security update
X.Org X11 libXrender runtime library
Security Fix(es):
- libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats (CVE-2026-88807)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Record
ALSA-2026:91267- Updated
- 2026-11-02
OSVAZL-103391 No score
CVE-2026-88807 affecting package libXrender for versions less than 0.9.13-1
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
- Record
AZL-103391- Updated
- 2026-11-02
OSVMGASA-2026-0543 No score
Updated libxtst, libxrender, libxi packages fix security vulnerabilities
The updated packages fix security vulnerabilities: libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow. (CVE-2026-109089) libXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow. (CVE-2026-109090) Out-of-bounds read in libXrender's XRenderQueryFormat reply parser. (CVE-2026-88807) libXtst RECORD EnableContext Reply Endless Loop. (CVE-2026-109088)
- Record
MGASA-2026-0543- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11834-1 No score
libXrender-devel-0.9.12-2.1 on GA media
These are all security issues fixed in the libXrender-devel-0.9.12-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11834-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:21909-1 No score
Security update for libXrender
This update for libXrender fixes the following issue:
- CVE-2026-88807: RenderQueryPictFormats Reply Heap-based Buffer Overflow (bsc#1280911).
- Record
openSUSE-SU-2026:21909-1- Updated
- 2026-11-02
OSVROOT-OS-DEBIAN-12-CVE-2026-88807 No score
CVE-2026-88807 in libxrender - Patched by Root
Root has patched CVE-2026-88807 in the libxrender package for Root:Debian:12. Multiple fixed versions available.
- Record
ROOT-OS-DEBIAN-12-CVE-2026-88807- Updated
- 2026-11-02
OSVROOT-OS-DEBIAN-13-CVE-2026-88807 No score
CVE-2026-88807 in libxrender - Patched by Root
Root has patched CVE-2026-88807 in the libxrender package for Root:Debian:13. Multiple fixed versions available.
- Record
ROOT-OS-DEBIAN-13-CVE-2026-88807- Updated
- 2026-11-02
OSVSUSE-SU-2026:23886-1 No score
Security update for libXrender
This update for libXrender fixes the following issue:
- CVE-2026-88807: RenderQueryPictFormats Reply Heap-based Buffer Overflow (bsc#1280911).
- Record
SUSE-SU-2026:23886-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:23900-1 No score
Security update for libXrender
This update for libXrender fixes the following issue:
- CVE-2026-88807: RenderQueryPictFormats Reply Heap-based Buffer Overflow (bsc#1280911).
- Record
SUSE-SU-2026:23900-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:4395-1 No score
Security update for libXrender
This update for libXrender fixes the following issue:
- CVE-2026-88807: RenderQueryPictFormats Reply Heap-based Buffer Overflow (bsc#1280911).
- Record
SUSE-SU-2026:4395-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:4397-1 No score
Security update for libXrender
This update for libXrender fixes the following issue:
- CVE-2026-88807: RenderQueryPictFormats Reply Heap-based Buffer Overflow (bsc#1280911).
- Record
SUSE-SU-2026:4397-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libxrenderAlpine:v3.24 |
before 0.9.13-r0 | 0.9.13-r0 |
libXrenderAlmaLinux:10 |
before 0.9.11-8.el10_2.1 | 0.9.11-8.el10_2.1 |
libXrender-develAlmaLinux:10 |
before 0.9.11-8.el10_2.1 | 0.9.11-8.el10_2.1 |
libXrenderAlmaLinux:9 |
before 0.9.10-16.el9_8.2 | 0.9.10-16.el9_8.2 |
libXrender-develAlmaLinux:9 |
before 0.9.10-16.el9_8.2 | 0.9.10-16.el9_8.2 |
libXrenderAlmaLinux:8 |
before 0.9.10-8.el8_10 | 0.9.10-8.el8_10 |
libXrender-develAlmaLinux:8 |
before 0.9.10-8.el8_10 | 0.9.10-8.el8_10 |
libXrenderAzure Linux:3 |
before 0.9.13-1 | 0.9.13-1 |
libxrenderAlpaquita:23 |
0.9.11-r0 up to 0.9.13-r0 | 0.9.13-r0 |
libxrenderAlpaquita:25 |
0.9.12-r0 up to 0.9.13-r0 | 0.9.13-r0 |
Show 47 moreShow less
| Package | Affected | Fixed |
|---|---|---|
libxrenderAlpaquita:stream |
0.9.11-r0 up to 0.9.13-r0 | 0.9.13-r0 |
libxrenderDebian:12 |
All versions, plus listed versions 1:0.9.10-1.11:0.9.12-11:0.9.13-1 |
None known |
libxrenderDebian:13 |
All versions, plus listed versions 1:0.9.12-11:0.9.13-1 |
None known |
libxrenderDebian:14 |
before 1:0.9.13-1, plus listed versions 1:0.9.12-1 |
1:0.9.13-1 |
libxtstMageia:10 From an advisory covering 4 CVEs |
before 1.2.5-2.2.mga10 | 1.2.5-2.2.mga10 |
libxrenderMageia:10 From an advisory covering 4 CVEs |
before 0.9.12-2.1.mga10 | 0.9.12-2.1.mga10 |
libxiMageia:10 From an advisory covering 4 CVEs |
before 1.8.2-2.2.mga10 | 1.8.2-2.2.mga10 |
libXrenderopenEuler:22.03-LTS-SP4 |
before 0.9.10-13.oe2203sp4 | 0.9.10-13.oe2203sp4 |
libXrenderopenEuler:24.03-LTS-SP1 |
before 0.9.11-2.oe2403sp1 | 0.9.11-2.oe2403sp1 |
libXrenderopenEuler:24.03-LTS-SP3 |
before 0.9.11-2.oe2403sp3 | 0.9.11-2.oe2403sp3 |
libXrenderopenEuler:24.03-LTS-SP4 |
before 0.9.11-2.oe2403sp4 | 0.9.11-2.oe2403sp4 |
libXrenderRocky Linux:10 |
before 0:0.9.11-8.el10_2.1 | 0:0.9.11-8.el10_2.1 |
libXrenderRocky Linux:9 |
before 0:0.9.10-16.el9_8.2 | 0:0.9.10-16.el9_8.2 |
libXrenderRocky Linux:8 |
before 0:0.9.10-8.el8_10 | 0:0.9.10-8.el8_10 |
libxrenderRoot:Debian:12 |
before 1:0.9.10-1.1.aikido.1 | 1:0.9.10-1.1.aikido.1 |
rootio-libxrenderRoot:Debian:12 |
before 1:0.9.10-1.1.aikido.1 | 1:0.9.10-1.1.aikido.1 |
libxrenderRoot:Debian:13 |
before 1:0.9.12-1.aikido.1 | 1:0.9.12-1.aikido.1 |
rootio-libxrenderRoot:Debian:13 |
before 1:0.9.12-1.aikido.1 | 1:0.9.12-1.aikido.1 |
libXrenderSUSE:Linux Micro 6.2 |
before 0.9.11-160000.3.1 | 0.9.11-160000.3.1 |
libXrenderSUSE:Linux Enterprise Server 16.0 |
before 0.9.11-160000.3.1 | 0.9.11-160000.3.1 |
libXrenderSUSE:Linux Enterprise Server for SAP applications 16.0 |
before 0.9.11-160000.3.1 | 0.9.11-160000.3.1 |
libXrenderSUSE:Linux Enterprise Server 12 SP5-LTSS |
before 0.9.8-8.3.1 | 0.9.8-8.3.1 |
libXrenderSUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 |
before 0.9.8-8.3.1 | 0.9.8-8.3.1 |
libXrenderSUSE:Linux Enterprise Micro 5.3 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Micro 5.4 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Micro 5.5 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Module for Basesystem 15 SP7 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Server 15 SP4-LTSS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Server 15 SP5-LTSS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Server 15 SP6-LTSS |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Server for SAP Applications 15 SP4 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Server for SAP Applications 15 SP5 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libXrenderSUSE:Linux Enterprise Server for SAP Applications 15 SP6 |
before 0.9.10-150000.3.3.1 | 0.9.10-150000.3.3.1 |
libxrenderUbuntu:14.04:LTS |
All versions, plus listed versions 1:0.9.8-11:0.9.8-1build0.14.04.1 |
None known |
libxrenderUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 1:0.9.9-0ubuntu11:0.9.9-0ubuntu1+esm1 |
None known |
libxrenderUbuntu:18.04:LTS |
All versions, plus listed versions 1:0.9.10-1 |
None known |
libxrenderUbuntu:20.04:LTS |
All versions, plus listed versions 1:0.9.10-1 |
None known |
libxrenderUbuntu:22.04:LTS |
All versions, plus listed versions 1:0.9.10-1build21:0.9.10-1build31:0.9.10-1build4 |
None known |
libxrenderUbuntu:24.04:LTS |
All versions, plus listed versions 1:0.9.10-1.11:0.9.10-1.1build1 |
None known |
libxrenderUbuntu:26.10 |
All versions, plus listed versions 1:0.9.12-1build1 |
None known |
libxrenderUbuntu:26.04:LTS |
All versions, plus listed versions 1:0.9.12-11:0.9.12-1build1 |
None known |
libXrenderopenSUSE:Tumbleweed |
before 0.9.12-2.1 | 0.9.12-2.1 |
libXrenderopenSUSE:Leap 16.0 |
before 0.9.11-160000.3.1 | 0.9.11-160000.3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| affected, facts | OSV | |
| affected | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-88807 is a high vulnerability (CVSS 8.9) in X.org Libxrender, published September 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th percentile. Fixed in libxrender 0.9.13-r0.
References
gitlab.freedesktop.org/xorg/lib/libxrender/-/merge_requests/19
nvd.nist.gov/vuln/detail/CVE-2026-88807
github.com/advisories/GHSA-52cp-fjgx-xr28
security.alpinelinux.org/vuln/CVE-2026-88807
access.redhat.com/errata/RHSA-2026:91003
Show 30 moreShow less
bugzilla.redhat.com/2537924
errata.almalinux.org/10/ALSA-2026-91003.html
docs.bell-sw.com/security/cves/CVE-2026-88807
security-tracker.debian.org/tracker/CVE-2026-88807
advisories.mageia.org/MGASA-2026-0543.html
bugs.mageia.org/show_bug.cgi?id=36533
openwall.com/lists/oss-security/2026/10/16/37
lists.x.org/archives/xorg-announce/2026-October/thread.html
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2026-4476
errata.rockylinux.org/RLSA-2026:91003
suse.com/support/update/announcement/2026/suse-su-202623886-1
bugzilla.suse.com/1280911
ubuntu.com/security/CVE-2026-88807
cve.org/CVERecord?id=CVE-2026-88807