Vulnerability-Lookup

GHSA-HRF3-6C7V-5628

Vulnerability from github – Published: 2026-03-12 15:30 – Updated: 2026-03-12 15:30

Details

A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.

Severity ?

5.8 (Medium)


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

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  "affected": [],
  "aliases": [
    "CVE-2026-3099"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-323"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-12T14:16:18Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.",
  "id": "GHSA-hrf3-6c7v-5628",
  "modified": "2026-03-12T15:30:25Z",
  "published": "2026-03-12T15:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3099"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-3099"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2442232"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/495"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-3099 (GCVE-0-2026-3099)

Vulnerability from cvelistv5 – Published: 2026-03-12 13:53 – Updated: 2026-03-23 14:40

Title

Libsoup: libsoup: authentication bypass via digest authentication replay attack

Summary

Severity ?

5.8 (Medium)


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

CWE

CWE-323 - Reusing a Nonce, Key Pair in Encryption

Assigner

redhat

References

URL

Tags

	https://access.redhat.com/security/cve/CVE-2026-3099	vdb-entryx_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2442232	issue-trackingx_refsource_REDHAT
	https://gitlab.gnome.org/GNOME/libsoup/-/issues/495

Impacted products

Vendor

Product

Version

Red Hat

Red Hat Enterprise Linux 10

cpe:/o:redhat:enterprise_linux:10

Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public ?

2026-02-24 01:01

Credits

Red Hat would like to thank Cavid for reporting this issue.

Show details on NVD website

JSON

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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

GHSA-HRF3-6C7V-5628

CVE-2026-3099 (GCVE-0-2026-3099)

Tags

Sightings

Nomenclature