OESA-2026-2513

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2513
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-2513.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-2513
Upstream
Published
2026-05-29T11:11:27Z
Modified
2026-08-18T01:20:01Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L CVSS Calculator
Summary
nginx security update
Details

NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server.

Security Fix(es):

NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to "on" or "optional," and the ssl_ocsp directive is set to "on" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-40701)

NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-42934)

A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGINX worker process or restart it.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.(CVE-2026-42946)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:22.03-LTS-SP4 / nginx

Package

Name
nginx
Purl
pkg:rpm/openEuler/nginx&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.21.5-14.oe2203sp4

Ecosystem specific 

{
    "aarch64": [
        "nginx-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-debuginfo-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-debugsource-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-mod-devel-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-mod-http-image-filter-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-mod-http-perl-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-mod-http-xslt-filter-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-mod-mail-1.21.5-14.oe2203sp4.aarch64.rpm",
        "nginx-mod-stream-1.21.5-14.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "nginx-all-modules-1.21.5-14.oe2203sp4.noarch.rpm",
        "nginx-filesystem-1.21.5-14.oe2203sp4.noarch.rpm",
        "nginx-help-1.21.5-14.oe2203sp4.noarch.rpm"
    ],
    "src": [
        "nginx-1.21.5-14.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "nginx-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-debuginfo-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-debugsource-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-mod-devel-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-mod-http-image-filter-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-mod-http-perl-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-mod-http-xslt-filter-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-mod-mail-1.21.5-14.oe2203sp4.x86_64.rpm",
        "nginx-mod-stream-1.21.5-14.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-2513.json"