Vulnerability-Lookup

CVE-2026-67183 (GCVE-0-2026-67183)

Vulnerability from cvelistv5 – Published: 2026-07-28 16:26 – Updated: 2026-07-28 17:22 X_Open Source

Title

TinyWeb 0.0.8 Memory Leak DoS via HTTP Request Handling

Summary

TinyWeb through 0.0.8 contains a memory leak vulnerability that allows unauthenticated attackers to exhaust available memory by sending ordinary well-formed HTTP requests. Each request causes HttpParser::execute() to allocate Url objects, HttpHeaders objects, and HttpHeader instances via raw new expressions that are never freed due to missing destructors and unreachable delete calls, causing worker resident memory to grow monotonically by approximately 20 to 28 kB per request until the worker process is killed.

Severity

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

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/theopaid/Unauthenticated-Memor…	technical-descriptionexploit
https://www.vulncheck.com/advisories/tinyweb-memo…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
GeneralSandman	TinyWeb	Affected: e48f15d38d2bebeec9cabcfdde81931b10a1963b , ≤ a381da252fe8e873c8aff22703040426cc9b2ae0 (git) Affected: 0.0.8 (semver)

Date Public

2026-07-26 00:00

Credits

Theodosis Paidakis

Show details on NVD website

JSON

To clipboard

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GHSA-9HXR-3MX5-3V44

Vulnerability from github – Published: 2026-07-28 18:33 – Updated: 2026-07-28 18:33

Details

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-67183"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-28T17:17:07Z",
    "severity": "HIGH"
  },
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  "id": "GHSA-9hxr-3mx5-3v44",
  "modified": "2026-07-28T18:33:04Z",
  "published": "2026-07-28T18:33:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67183"
    },
    {
      "type": "WEB",
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    },
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    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/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"
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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.

Action not permitted

CVE-2026-67183 (GCVE-0-2026-67183)

GHSA-9HXR-3MX5-3V44

Tags

Sightings

Nomenclature