Vulnerability-Lookup

ALSA-2026:89860

Vulnerability from osv_almalinux – Published: 2026-10-26 00:00 – Updated: 2026-10-26 19:44 – Source website

Summary

Important: httpd security update

Details

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

httpd: httpd: HTTP response smuggling via crafted Transfer-Encoding response in mod_proxy_uwsgi (CVE-2026-63718)
httpd: httpd: Denial of Service via integer overflow in mod_dav_fs (CVE-2026-93546)
httpd: httpd: Authentication state corruption via concurrent Digest authentication requests (CVE-2026-73637)
httpd: httpd: unauthorized connection to arbitrary hosts via crafted FTP PASV response (CVE-2026-63045)
httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias (CVE-2026-63292)
httpd: httpd: mod_heartmonitor: Denial of Service via NULL pointer dereference (CVE-2026-46729)
httpd: httpd: Authentication bypass via credential replay in mod_auth_digest (CVE-2026-73636)
httpd: httpd: Denial of Service via charset conversion failure in mod_xml2enc (CVE-2026-63686)
httpd: httpd: Denial of service via forged Authorization headers in mod_auth_digest (CVE-2026-48005)
httpd: httpd: Denial of Service via mod_rewrite lookahead (CVE-2026-56154)
httpd: httpd: Denial of Service via heap-based buffer overflow in mod_charset_lite (CVE-2026-56153)

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-2026:89860	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-46729	REPORT
	https://access.redhat.com/security/cve/CVE-2026-48005	REPORT
	https://access.redhat.com/security/cve/CVE-2026-56153	REPORT
	https://access.redhat.com/security/cve/CVE-2026-56154	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63045	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63292	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63686	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63718	REPORT
	https://access.redhat.com/security/cve/CVE-2026-73636	REPORT
	https://access.redhat.com/security/cve/CVE-2026-73637	REPORT
	https://access.redhat.com/security/cve/CVE-2026-93546	REPORT
	https://bugzilla.redhat.com/2544781	REPORT
	https://bugzilla.redhat.com/2544798	REPORT
	https://bugzilla.redhat.com/2544814	REPORT
	https://bugzilla.redhat.com/2544823	REPORT
	https://bugzilla.redhat.com/2544832	REPORT
	https://bugzilla.redhat.com/2544835	REPORT
	https://bugzilla.redhat.com/2544849	REPORT
	https://bugzilla.redhat.com/2544852	REPORT
	https://bugzilla.redhat.com/2544861	REPORT
	https://bugzilla.redhat.com/2544869	REPORT
	https://bugzilla.redhat.com/2544885	REPORT
	https://errata.almalinux.org/10/ALSA-2026-89860.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "httpd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "httpd-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "httpd-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "httpd-filesystem"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "httpd-manual"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "httpd-tools"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "mod_ldap"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "mod_lua"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "mod_proxy_html"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "mod_session"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "mod_ssl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.4.63-13.el10_2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.  \n\nSecurity Fix(es):  \n\n  * httpd: httpd: HTTP response smuggling via crafted Transfer-Encoding response in mod_proxy_uwsgi (CVE-2026-63718)\n  * httpd: httpd: Denial of Service via integer overflow in mod_dav_fs (CVE-2026-93546)\n  * httpd: httpd: Authentication state corruption via concurrent Digest authentication requests (CVE-2026-73637)\n  * httpd: httpd: unauthorized connection to arbitrary hosts via crafted FTP PASV response (CVE-2026-63045)\n  * httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias (CVE-2026-63292)\n  * httpd: httpd: mod_heartmonitor: Denial of Service via NULL pointer dereference (CVE-2026-46729)\n  * httpd: httpd: Authentication bypass via credential replay in mod_auth_digest (CVE-2026-73636)\n  * httpd: httpd: Denial of Service via charset conversion failure in mod_xml2enc (CVE-2026-63686)\n  * httpd: httpd: Denial of service via forged Authorization headers in mod_auth_digest (CVE-2026-48005)\n  * httpd: httpd: Denial of Service via mod_rewrite lookahead (CVE-2026-56154)\n  * httpd: httpd: Denial of Service via heap-based buffer overflow in mod_charset_lite (CVE-2026-56153)\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-2026:89860",
  "modified": "2026-10-26T19:44:33Z",
  "published": "2026-10-26T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:89860"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46729"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-48005"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-56153"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-56154"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63045"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63292"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63686"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63718"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-73636"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-73637"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-93546"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544781"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544798"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544814"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544823"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544832"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544835"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544849"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544852"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544861"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544869"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2544885"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-89860.html"
    }
  ],
  "related": [
    "CVE-2026-63718",
    "CVE-2026-93546",
    "CVE-2026-73637",
    "CVE-2026-63045",
    "CVE-2026-63292",
    "CVE-2026-46729",
    "CVE-2026-73636",
    "CVE-2026-63686",
    "CVE-2026-48005",
    "CVE-2026-56154",
    "CVE-2026-56153"
  ],
  "summary": "Important: httpd security update"
}

CVE-2026-93546 (GCVE-0-2026-93546)

Vulnerability from cvelistv5 – Published: 2026-10-01 16:19 – Updated: 2026-10-01 20:09

Title

Apache HTTP Server: mod_dav_fs namespace overflow

Summary

Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-01 19:38 UTC

CWE

CWE-190 - Integer overflow or wraparound

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1085 records in the last 180 days details

References

2 references

URL	Tags
https://httpd.apache.org/security/vulnerabilities…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache HTTP Server	Affected: 0 , ≤ 2.4.68 (semver)

Credits

Zhen Kong Calif.io in collaboration with Anthropic AISLE in partnership with Red Hat

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
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                "options": [
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                  },
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                    "Technical Impact": "total"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-10-01T19:38:29.562581Z",
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              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-01T19:38:34.954Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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      {
        "providerMetadata": {
          "dateUpdated": "2026-10-01T20:09:35.921Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          }
        ],
        "title": "CVE Program Container"
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          "defaultStatus": "unaffected",
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      "metrics": [
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            "content": {
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          "time": "2026-07-28T12:00:00.000Z",
          "value": "reported"
        },
        {
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          "time": "2026-10-01T12:00:00.000Z",
          "value": "fixed in 2.4.x by r1938682"
        },
        {
          "lang": "eng",
          "time": "2026-10-01T12:00:00.000Z",
          "value": "2.4.69 released"
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      "title": "Apache HTTP Server: mod_dav_fs namespace overflow",
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    "cveId": "CVE-2026-93546",
    "datePublished": "2026-10-01T16:19:32.662Z",
    "dateReserved": "2026-09-18T09:17:50.552Z",
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.
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