Vulnerability-Lookup

OESA-2026-1572 (CVE-2026-1642)

Vulnerability from osv_openeuler – Published: 2026-03-15 11:10 – Updated: 2026-08-06 11:10 – Source website

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):

A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side—along with conditions beyond the attacker's control—may be able to inject plain text data into the response from an upstream proxied server. The vulnerability is classified as CWE-349: The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted. This vulnerability primarily affects data integrity.(CVE-2026-1642)

Severity

8.2 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-1642	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "nginx-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-debuginfo-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-debugsource-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-mod-devel-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-mod-http-image-filter-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-mod-http-perl-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-mod-http-xslt-filter-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-mod-mail-1.21.5-9.oe2003sp4.aarch64.rpm",
          "nginx-mod-stream-1.21.5-9.oe2003sp4.aarch64.rpm"
        ],
        "noarch": [
          "nginx-all-modules-1.21.5-9.oe2003sp4.noarch.rpm",
          "nginx-filesystem-1.21.5-9.oe2003sp4.noarch.rpm"
        ],
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          "nginx-1.21.5-9.oe2003sp4.src.rpm"
        ],
        "x86_64": [
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          "nginx-mod-http-xslt-filter-1.21.5-9.oe2003sp4.x86_64.rpm",
          "nginx-mod-mail-1.21.5-9.oe2003sp4.x86_64.rpm",
          "nginx-mod-stream-1.21.5-9.oe2003sp4.x86_64.rpm"
        ]
      },
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        }
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          "nginx-mod-stream-1.21.5-11.oe2203sp4.aarch64.rpm"
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          "nginx-mod-http-xslt-filter-1.24.0-7.oe2403sp2.x86_64.rpm",
          "nginx-mod-mail-1.24.0-7.oe2403sp2.x86_64.rpm",
          "nginx-mod-stream-1.24.0-7.oe2403sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP2",
        "name": "nginx",
        "purl": "pkg:rpm/openEuler/nginx\u0026distro=openEuler-24.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.24.0-7.oe2403sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "nginx-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-debuginfo-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-debugsource-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-mod-devel-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-mod-http-image-filter-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-mod-http-perl-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-mod-http-xslt-filter-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-mod-mail-1.24.0-7.oe2403sp3.aarch64.rpm",
          "nginx-mod-stream-1.24.0-7.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "nginx-all-modules-1.24.0-7.oe2403sp3.noarch.rpm",
          "nginx-filesystem-1.24.0-7.oe2403sp3.noarch.rpm",
          "nginx-help-1.24.0-7.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "nginx-1.24.0-7.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "nginx-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-debuginfo-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-debugsource-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-mod-devel-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-mod-http-image-filter-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-mod-http-perl-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-mod-http-xslt-filter-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-mod-mail-1.24.0-7.oe2403sp3.x86_64.rpm",
          "nginx-mod-stream-1.24.0-7.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "nginx",
        "purl": "pkg:rpm/openEuler/nginx\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.24.0-7.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "NGINX is a free, open-source, high-performance HTTP server and reverse proxy,  as well as an IMAP/POP3 proxy server.\r\n\r\nSecurity Fix(es):\n\nA vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side\u2014along with conditions beyond the attacker\u0026apos;s control\u2014may be able to inject plain text data into the response from an upstream proxied server. The vulnerability is classified as CWE-349: The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted. This vulnerability primarily affects data integrity.(CVE-2026-1642)",
  "id": "OESA-2026-1572",
  "modified": "2026-08-06T11:10:34Z",
  "published": "2026-03-15T11:10:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1572"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1642"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "nginx security update",
  "upstream": [
    "CVE-2026-1642"
  ]
}

CVE-2026-1642 (GCVE-0-2026-1642)

Vulnerability from cvelistv5 – Published: 2026-02-04 15:02 – Updated: 2026-02-05 05:25

Title

NGINX vulnerability

Summary

A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side—along with conditions beyond the attacker's control—may be able to inject plain text data into the response from an upstream proxied server. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity

5.9 (Medium)


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

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-04 16:01 UTC

CWE

CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data

Assigner

f5 mitre root

References

2 references

URL	Tags
https://my.f5.com/manage/s/article/K000159824	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/02/05/1

Impacted products

2 products

Vendor	Product	Version
F5	NGINX Open Source	Affected: 1.3.0 , < 1.29.5 (semver)
F5	NGINX Plus	Affected: R36 , < R36 P2 (custom) Affected: R35 , < R35 P1 (custom) Affected: R34 , < * (custom) Affected: R33 , < * (custom) Affected: R32 , < R32 P4 (custom)

Date Public

2026-02-04 15:00

Credits

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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.

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.