Vulnerability-Lookup

CVE-2026-5507 (GCVE-0-2026-5507)

Vulnerability from cvelistv5 – Published: 2026-04-09 22:18 – Updated: 2026-04-14 14:38

Title

Session Cache Restore — Arbitrary Free via Deserialized Pointer

Summary

When restoring a session from cache, a pointer from the serialized session data is used in a free operation without validation. An attacker who can poison the session cache could trigger an arbitrary free. Exploitation requires the ability to inject a crafted session into the cache and for the application to call specific session restore APIs.

Severity ?

4.1 (Medium)


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

CWE

CWE-502 - Deserialization of untrusted data

Assigner

wolfSSL

References

URL

Tags

https://github.com/wolfSSL/wolfssl/pull/10088

Impacted products

	Vendor	Product	Version
	wolfSSL	wolfSSL	Affected: 0 , ≤ 5.9.0 (semver)

Credits

Sunwoo Lee (Korea Institute of Energy Technology, KENTECH) Woohyun Choi (Korea Institute of Energy Technology, KENTECH) Seunghyun Yoon (Korea Institute of Energy Technology, KENTECH)

Show details on NVD website

JSON

To clipboard

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GHSA-F5FH-XMXQ-55P9

Vulnerability from github – Published: 2026-04-10 00:30 – Updated: 2026-04-29 15:30

Details

Severity ?

4.0 (Medium)


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

4.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5507"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-09T23:17:01Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-f5fh-xmxq-55p9",
  "modified": "2026-04-29T15:30:35Z",
  "published": "2026-04-10T00:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5507"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wolfSSL/wolfssl/pull/10088"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

FKIE_CVE-2026-5507

Vulnerability from fkie_nvd - Published: 2026-04-09 23:17 - Updated: 2026-04-29 14:05

Severity ?

4.0 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	facts@wolfssl.com	https://github.com/wolfSSL/wolfssl/pull/10088	Issue Tracking, Patch

Impacted products

	Vendor	Product	Version
	wolfssl	wolfssl	*

JSON

To clipboard

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MSRC_CVE-2026-5507

Vulnerability from csaf_microsoft - Published: 2026-04-02 00:00 - Updated: 2026-04-30 01:53

Summary

Session Cache Restore — Arbitrary Free via Deserialized Pointer

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-5507

CWE-502 - Deserialization of Untrusted Data

References

URL

Category

	https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self
	https://support.microsoft.com/lifecycle	external
	https://www.first.org/cvss	external
	https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self

JSON

To clipboard

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    "csaf_version": "2.0",
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        "category": "general",
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        "title": "Additional Resources"
      },
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        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
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      },
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      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Session Cache Restore \u2014 Arbitrary Free via Deserialized Pointer",
    "tracking": {
      "current_release_date": "2026-04-30T01:53:59.000Z",
      "generator": {
        "date": "2026-04-30T08:42:48.218Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-5507",
      "initial_release_date": "2026-04-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-04-15T01:02:51.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-04-30T01:53:59.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              },
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "category": "product_name",
            "name": "cbl2 mariadb 0:10.6.25-1.cbl2",
            "product": {
              "name": "cbl2 mariadb 0:10.6.25-1.cbl2",
              "product_id": "1"
            }
          },
          {
            "category": "product_name",
            "name": "azl3 mariadb 0:10.11.16-1.azl3",
            "product": {
              "name": "azl3 mariadb 0:10.11.16-1.azl3",
              "product_id": "2"
            }
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 mariadb 0:10.6.25-1.cbl2 as a component of CBL Mariner 2.0",
          "product_id": "17086-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 mariadb 0:10.11.16-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-5507",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "flags": [
        {
          "label": "component_not_present",
          "product_ids": [
            "17086-1",
            "17084-2"
          ]
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "wolfSSL",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "17086-1",
          "17084-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-5507 Session Cache Restore \u2014 Arbitrary Free via Deserialized Pointer - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-5507.json"
        }
      ],
      "title": "Session Cache Restore \u2014 Arbitrary Free via Deserialized Pointer"
    }
  ]
}

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.

Action not permitted

CVE-2026-5507 (GCVE-0-2026-5507)

GHSA-F5FH-XMXQ-55P9

FKIE_CVE-2026-5507

MSRC_CVE-2026-5507

Tags

Sightings

Nomenclature