CVE-2026-60005· NVD / CVE Program· CNA f5

NGINX ngx_http_slice_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_slice_module module. When the slice directive and unnamed regex captures are configured or when a background cache update happens, unauthenticated attackers can send requests that may cause uninitialized memory access in the NGINX worker process, leading to limited disclosure of memory or a restart. Impact: This vulnerability may allow remote, unauthenticated attackers to have limited control to disclose memory contents or restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only. Note: The ngx_http_slice_module module is not enabled by default; it's enabled with the --with-http_slice_module configuration parameter. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

HighCVSS 8.8 · v4.0—No exploit Fix available

Published: Jul 15, 2026
Updated: Aug 11, 2026
EPSS: 0.5% · 43th percentile
CWE: CWE-908

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Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · f5: 8.2; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

Vendor	Product	CPE
f5	nginx gateway fabric	cpe:2.3:a:f5:nginx_gateway_fabric
f5	nginx ingress controller	cpe:2.3:a:f5:nginx_ingress_controller
f5	nginx instance manager	cpe:2.3:a:f5:nginx_instance_manager
f5	nginx open source	cpe:2.3:a:f5:nginx_open_source
f5	nginx plus	cpe:2.3:a:f5:nginx_plus
f5	waf	cpe:2.3:a:f5:waf

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

f5 nginx open source1.30.0 and later · before 1.30.4
f5 nginx open source1.31.2
f5 nginx plus37.0.0.1 and later · before 37.0.3.1
f5 nginx plusr33 and later · before r36
f5 nginx plusr36

Versions reported by the vendor

Affected version ranges reported by the assigning authority (f5). Independent of NVD's CPE analysis and usually ahead of it.

F5 NGINX Open Source
- 1.31.2 and later · before 1.31.3affected
- 1.15.8 and later · before 1.30.4affected
F5 NGINX Plus
- 37.0.0.1 and later · before 37.0.3.1affected
- R36 and later · before R36 P7affected
- R33 and lateraffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
AlmaLinux:10	nginx	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-all-modules	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-core	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-filesystem	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-mod-devel	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-mod-http-image-filter	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-mod-http-perl	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-mod-http-xslt-filter	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-mod-mail	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:10	nginx-mod-stream	before 2:1.26.3-6.el10_2.6	2:1.26.3-6.el10_2.6
AlmaLinux:8	nginx	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-all-modules	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-filesystem	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-mod-devel	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-mod-http-image-filter	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-mod-http-perl	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-mod-http-xslt-filter	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-mod-mail	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:8	nginx-mod-stream	before 1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1
AlmaLinux:9	nginx	before 2:1.26.3-9.module_el9.8.0+300+0781a894.3	2:1.26.3-9.module_el9.8.0+300+0781a894.3
AlmaLinux:9	nginx	before 1:1.24.0-7.module_el9.8.0+298+469955e3.4.alma.1	1:1.24.0-7.module_el9.8.0+298+469955e3.4.alma.1
AlmaLinux:9	nginx	before 2:1.20.1-28.el9_8.5.alma.1	2:1.20.1-28.el9_8.5.alma.1
AlmaLinux:9	nginx-all-modules	before 1:1.24.0-7.module_el9.8.0+298+469955e3.4.alma.1	1:1.24.0-7.module_el9.8.0+298+469955e3.4.alma.1
AlmaLinux:9	nginx-all-modules	before 2:1.26.3-9.module_el9.8.0+300+0781a894.3	2:1.26.3-9.module_el9.8.0+300+0781a894.3

+96

Same product

f5: all records

Other highest-scoring records for the same primary product.

CVE-2026-42533NGINX Map directive and Regex matching vulnerability
36Monitor
CVE-2026-42530NGINX Open-Source ngx_http_v3_module vulnerability
36Monitor
CVE-2026-66362Description: When NGINX Plus is configured as the data plane for NGINX Gateway Fabric, an injection vulnerability exists in the NGINX config
34Monitor
CVE-2026-50107NGINX Gateway Fabric vulnerability
34Monitor
CVE-2026-11311NGINX Gateway Fabric vulnerability
34Monitor
CVE-2026-56434NGINX ngx_http_ssi_module vulnerability
33Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
almalinux:nginx	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-all-modules	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-core	2:1.26.3-6.el10_2.6 · AlmaLinux:10	Package registry (OSV)
almalinux:nginx-filesystem	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-mod-devel	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-mod-http-image-filter	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-mod-http-perl	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-mod-http-xslt-filter	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-mod-mail	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
almalinux:nginx-mod-stream	1:1.24.0-3.module_el8.10.0+4259+e9485ae5.4.alma.1 · AlmaLinux:8	Package registry (OSV)
alpine:nginx	1.26.3-r2 · Alpine:v3.21	Package registry (OSV)
debian:nginx	1.22.1-9+deb12u10 · Debian:12	Package registry (OSV)
opensuse:nginx	1.31.3-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
red hat:nginx	0:1.30.4-2.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
red hat:nginx-all-modules	0:1.30.4-2.hum1 · Red Hat:hummingbird:1	Package registry (OSV)
red hat:nginx-debuginfo	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-debugsource	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-filesystem	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-devel	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-http-image-filter	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-http-image-filter-debuginfo	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-http-perl	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-http-perl-debuginfo	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-http-xslt-filter	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nginx-mod-http-xslt-filter-debuginfo	1:1.24.0-3.module+el8.10.0+24644+2676a8ce.4 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
rocky linux:nginx	1:1.24.0-3.module+el8.10.0+40220+e6a4bcb0.2 · Rocky Linux:8	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

F5finder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

my.f5.com/manage/s/article/K000162100

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records