CVE-2026-42945 (GCVE-0-2026-42945)
Vulnerability from cvelistv5 – Published: 2026-05-13 14:12 – Updated: 2026-09-10 12:04
VLAI
EPSS
VEX
Title
NGINX ngx_http_rewrite_module vulnerability
Summary
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 00:00 UTC
Assigner
References
34 references
Impacted products
48 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| F5 | NGINX Plus |
Unaffected:
R37 , < *
(custom)
Affected: R36 , < R36 P4 (custom) Affected: R32 , < R32 P6 (custom) |
guessed | |
| F5 | NGINX Open Source |
Unaffected:
1.31.0 , < *
(semver)
Affected: 0.6.27 , < 1.30.1 (semver) |
guessed | |
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
2:1.26.3-2.el10_1.2 , < *
(rpm)
Unaffected: 2:1.26.3-6.el10_2.3 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
||
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
2:1.26.3-1.el10_0.9 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260514165201.489197e6 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
2:1.20.1-24.el9_7.3 , < *
(rpm)
Unaffected: 2:1.20.1-28.el9_8.2 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
9080020260514160836.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
9080020260514152324.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
||
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
1:1.20.1-10.el9_0.4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0 |
||
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
1:1.20.1-14.el9_2.6 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
||
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
1:1.20.1-16.el9_4.6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
||
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
9040020260514192210.9 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
9060020260514175739.9 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
9060020260514170123.9 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
2:1.20.1-22.el9_6.6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
||
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.30.1-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.14 |
Unaffected:
1779972138 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.14::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.14 |
Unaffected:
1779972283 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.14::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.14 |
Unaffected:
1779972179 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.14::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.15 |
Unaffected:
1779967811 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.15::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.15 |
Unaffected:
1779967813 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.15::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.15 |
Unaffected:
1779968303 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.15::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.16 |
Unaffected:
1779959318 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.16::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.16 |
Unaffected:
1779959527 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.16::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.16 |
Unaffected:
1779959592 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.16::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.17 |
Unaffected:
1779952245 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.17::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.17 |
Unaffected:
1779952279 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.17::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.17 |
Unaffected:
1779952463 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.17::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.18 |
Unaffected:
1779881302 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.18::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.18 |
Unaffected:
1779881608 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.18::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.18 |
Unaffected:
1779881122 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.18::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.19 |
Unaffected:
1779881012 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.19::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.19 |
Unaffected:
1779881008 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.19::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.19 |
Unaffected:
1779881332 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.19::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.20 |
Unaffected:
1779879463 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.20::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.20 |
Unaffected:
1779877770 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.20::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.20 |
Unaffected:
1779881377 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.20::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.21 |
Unaffected:
1779946521 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.21::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.21 |
Unaffected:
1779946525 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.21::el9 |
||
| Red Hat | Red Hat Openshift Data Foundation 4.21 |
Unaffected:
1779946691 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.21::el9 |
||
| Red Hat | Red Hat Satellite 6.18 |
Unaffected:
1779706745 , < *
(rpm)
cpe:/a:redhat:satellite:6.18::el9 |
||
| Red Hat | Red Hat Satellite 6.19 |
Unaffected:
1779706797 , < *
(rpm)
cpe:/a:redhat:satellite:6.19::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1779798159 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1779798222 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1787241211 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1787241260 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat 3scale API Management Platform 2 |
cpe:/a:redhat:red_hat_3scale_amp:2
|
||
| Red Hat | Red Hat Lightspeed proxy 1 |
cpe:/a:redhat:insights_proxy:1
|
Date Public
2026-05-13 14:00
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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