CVE-2026-42945
highPriorität · verfolgen · 34EPSS 0.680 · 99. PerzentilExploit · PoCDEEUNLRUUSEPSS · bewertet 2026-10-27
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.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- BehobenHitachi Energy e-mesh EMScisa_csaf_ot
Apply hotfix for respective e-mesh EMS versions to update NGINX to either v1.30.2 or latest
- MitigationHitachi Energy e-mesh EMScisa_csaf_ot
Ensure rewrite configuration does not contain "?" to replace unnamed captures, and ensure ASLR is set to active (value=2) across all deployment targets covering all 3 versions.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · high–critical · 8.1–9.2
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
Exploits (46)
Öffentlicher Proof-of-Concept- und Exploit-Code.
- 0xBlackash/CVE-2026-42945CVE-2026-42945PoC · poc_in_github
betroffene Produkte (51)
Betroffene Produkte und Versionsbereiche.
Advisories (6)
Hersteller- und Ökosystem-Meldungen dazu.
- NCSC-2026-0164Kwetsbaarheid verholpen in NGINX ngx_http_rewrite_moduleNL2026-05-18csaf · ncsc_nlNL
NGINX heeft een kwetsbaarheid verholpen in het ngx_http_rewrite_module, onderdeel van zowel NGINX Plus als de Open Source editie.
- WID-SEC-W-2026-1527NGINX Open Source and NGINX Plus: Mehrere SchwachstellenDeutsch2026-05-14csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in NGINX Open Source and NGINX Plus ausnutzen, um Sicherheitsvorkehrungen zu umgehen, beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
- WID-SEC-W-2026-2933Splunk SOAR: Mehrere SchwachstellenDeutsch2026-08-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Splunk SOAR ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen, und um beliebigen Programmcode auszuführen.
- ICSA-26-188-03Hitachi Energy e-mesh EMS2026-06-30icsa · cisa_csaf_otUS
Hitachi Energy is aware of a buffer overflow vulnerability that affects e-mesh EMS product versions listed in this document. Successful exploitation of this vulnerability could lead to a buffer overflow condition, potentially resulting in application outages (denial of service) and possible arbitrary code execution. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
- BIT-nginx-2026-42945NGINX ngx_http_rewrite_module vulnerability2026-05-15vendor · osvUS
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.
- BIT-nginx-gateway-2026-42945NGINX ngx_http_rewrite_module vulnerability2026-05-15vendor · osvUS
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.
auch bekannt als (6)
Weitere Namen und Kennungen dieser Entität.
- CNNVD-202605-3149cnnvd
- EUVD-2026-30010enisa_euvd
- BDU:2026-06827fstec_bdu
- GHSA-gcgv-v5gf-c543enisa_euvd
- BIT-nginx-2026-42945osv
- BIT-nginx-gateway-2026-42945osv
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (40)
Externe Belege — Patches, Meldungen, Analysen.
- https://depthfirst.com/nginx-riftcnnvd
- https://github.com/DepthFirstDisclosures/Nginx-Riftcnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42945cnnvd
- https://my.f5.com/manage/s/article/K000161019cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-42945cnnvd
- https://my.f5.com/manage/s/article/K000161019enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:17417nvd
- https://access.redhat.com/errata/RHSA-2026:17751nvd
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