Vulnerability-Lookup

alsa-2026:7343

Vulnerability from osv_almalinux

Published

2026-04-09 00:00

Modified

2026-04-15 08:12

Summary

Important: nginx:1.26 security update

Details

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.

Security Fix(es):

nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files (CVE-2026-32647)
NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module (CVE-2026-27654)
NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file (CVE-2026-27784)
NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled (CVE-2026-27651)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:7343	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-27651	REPORT
	https://access.redhat.com/security/cve/CVE-2026-27654	REPORT
	https://access.redhat.com/security/cve/CVE-2026-27784	REPORT
	https://access.redhat.com/security/cve/CVE-2026-32647	REPORT
	https://bugzilla.redhat.com/2449598	REPORT
	https://bugzilla.redhat.com/2450776	REPORT
	https://bugzilla.redhat.com/2450785	REPORT
	https://bugzilla.redhat.com/2450791	REPORT
	https://errata.almalinux.org/9/ALSA-2026-7343.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "nginx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.26.3-2.module_el9.7.0+223+9cd7031b.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "nginx-all-modules"
      },
      "ranges": [
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "nginx-core"
      },
      "ranges": [
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            },
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
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      },
      "ranges": [
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          "events": [
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          ],
          "type": "ECOSYSTEM"
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      ]
    },
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            }
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        }
      ]
    }
  ],
  "details": "nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.   \n\nSecurity Fix(es):  \n\n  * nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files (CVE-2026-32647)\n  * NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module (CVE-2026-27654)\n  * NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file (CVE-2026-27784)\n  * NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled (CVE-2026-27651)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:7343",
  "modified": "2026-04-15T08:12:13Z",
  "published": "2026-04-09T00:00:00Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:7343"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-27651"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-27654"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-27784"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-32647"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2449598"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2450776"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2450785"
    },
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      "url": "https://bugzilla.redhat.com/2450791"
    },
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      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-7343.html"
    }
  ],
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    "CVE-2026-32647",
    "CVE-2026-27654",
    "CVE-2026-27784",
    "CVE-2026-27651"
  ],
  "summary": "Important: nginx:1.26 security update"
}

CVE-2026-27651 (GCVE-0-2026-27651)

Vulnerability from cvelistv5 – Published: 2026-03-24 14:13 – Updated: 2026-03-24 15:14

Title

NGINX ngx_mail_auth_http_module vulnerability

Summary

When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity ?

7.5 (High)


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

8.7 (High)


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

CWE

CWE-476 - NULL Pointer Dereference

Assigner

References

URL

Tags

https://my.f5.com/manage/s/article/K000160383

vendor-advisory

Impacted products

Vendor

Product

Version

NGINX Open Source

Affected: 1.29.0 , < 1.29.7 (semver)
Affected: 0.5.15 , < 1.28.3 (semver)

NGINX Plus

Affected: R36 , < R36 P3 (custom)
Affected: R35 , < R35 P2 (custom)
Affected: R34 , < * (custom)
Affected: R33 , < * (custom)
Affected: R32 , < R32 P5 (custom)

Date Public ?

2026-03-24 14:00

Credits

F5 acknowledges Arkadi Vainbrand for bringing this issue to our attention and following the highest standards of coordinated disclosure.

Show details on NVD website

JSON

To clipboard

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}

CVE-2026-27784 (GCVE-0-2026-27784)

Vulnerability from cvelistv5 – Published: 2026-03-24 14:13 – Updated: 2026-03-25 14:09

Title

NGINX ngx_http_mp4_module vulnerability

Summary

The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity ?

7.8 (High)


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

8.5 (High)


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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

References

URL

Tags

https://my.f5.com/manage/s/article/K000160364

vendor-advisory

Impacted products

	Vendor	Product	Version
	F5	NGINX Open Source	Affected: 1.29.0 , < 1.29.7 (semver) Affected: 1.1.19 , < 1.28.3 (semver)

Date Public ?

2026-03-24 14:00

Credits

F5 acknowledges Prabhav Srinath (sprabhav7) for bringing this issue to our attention and following the highest standards of coordinated disclosure.

Show details on NVD website

JSON

To clipboard

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          "descriptions": [
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              "cweId": "CWE-190",
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      ],
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CVE-2026-27654 (GCVE-0-2026-27654)

Vulnerability from cvelistv5 – Published: 2026-03-24 14:13 – Updated: 2026-03-24 15:15

Title

NGINX ngx_http_dav_module vulnerability

Summary

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity ?

8.2 (High)


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

8.8 (High)


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

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

References

URL

Tags

https://my.f5.com/manage/s/article/K000160382

vendor-advisory

Impacted products

Vendor

Product

Version

NGINX Open Source

Affected: 1.29.0 , < 1.29.7 (semver)
Affected: 0.5.13 , < 1.28.3 (semver)

NGINX Plus

Affected: R36 , < R36 P3 (custom)
Affected: R35 , < R35 P2 (custom)
Affected: R34 , < * (custom)
Affected: R33 , < * (custom)
Affected: R32 , < R32 P5 (custom)

Date Public ?

2026-03-24 14:00

Credits

F5 acknowledges Calif.io in collaboration with Claude and Anthropic Research for bringing this issue to our attention and following the highest standards of coordinated disclosure.

Show details on NVD website

JSON

To clipboard

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CVE-2026-32647 (GCVE-0-2026-32647)

Vulnerability from cvelistv5 – Published: 2026-03-24 14:13 – Updated: 2026-03-25 03:55

Title

NGINX ngx_http_mp4_module vulnerability

Summary

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to trigger a buffer over-read or over-write to the NGINX worker memory resulting in its termination or possibly code execution, using a specially crafted MP4 file. This issue affects NGINX Open Source and NGINX Plus if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity ?

7.8 (High)


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

8.5 (High)


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

CWE

CWE-125 - Out-of-bounds Read

Assigner

References

URL

Tags

https://my.f5.com/manage/s/article/K000160366

vendor-advisory

Impacted products

Vendor

Product

Version

NGINX Open Source

Affected: 1.29.0 , < 1.29.7 (semver)
Affected: 1.1.19 , < 1.28.3 (semver)

NGINX Plus

Affected: R36 , < R36 P3 (custom)
Affected: R35 , < R35 P2 (custom)
Affected: R34 , < * (custom)
Affected: R33 , < * (custom)
Affected: R32 , < R32 P5 (custom)

Date Public ?

2026-03-24 14:00

Credits

F5 acknowledges Xint Code and Pavel Kohout (Aisle Research) for bringing this issue to our attention and following the highest standards of coordinated disclosure.

Show details on NVD website

JSON

To clipboard

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Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

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.

Action not permitted

alsa-2026:7343

Vulnerability from osv_almalinux

CVE-2026-27651 (GCVE-0-2026-27651)

CVE-2026-27784 (GCVE-0-2026-27784)

CVE-2026-27654 (GCVE-0-2026-27654)

CVE-2026-32647 (GCVE-0-2026-32647)

Tags

Sightings

Nomenclature