VulnSocial

CVE-2026-27633Disclosure(ritlabs / tinyweb)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 have a Denial of Service (DoS) vulnerability via memory exhaustion. Unauthenticated remote attackers can send an HTTP POST request to the server with an exceptionally large `Content-Length` header (e.g., `2147483647`). The server continuously allocates memory for the request body (`EntityBody`) while streaming the payload without enforcing any maximum limit, leading to all available memory being consumed and causing the server to crash. Anyone hosting services using TinyWeb is impacted. Version 2.02 fixes the issue. The patch introduces a `CMaxEntityBodySize` limit (set to 10MB) for the maximum size of accepted payloads. As a temporary workaround if upgrading is not immediately possible, consider placing the server behind a Web Application Firewall (WAF) or reverse proxy (like nginx or Cloudflare) configured to explicitly limit the maximum allowed HTTP request body size (e.g., `client_max_body_size` in nginx).

ritlabs CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Weakness type (CWE)
CWE-400CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • tinyweb

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked 1d ago at 2 mentions (2026-02-26); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
ritlabs
Products
tinyweb

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-26: 2Mentions · 2026-03-03: 1Technical Details · 2026-02-26: 2Technical Details · 2026-03-03: 102-2603-03
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-02-262
Disclosure2
2026-03-031
Disclosure1
Full discourse3 posts
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2026-27633 (CVSS:8.7, HIGH) is Analyzed. TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 have a Denial of Servi..https://nvd.nist.gov/vuln/detail/CVE-2026-27633 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The post announces CVE-2026-27633, a high‑severity denial‑of‑service flaw in TinyWeb versions before 2.02, with CVSS score 8.7, but no PoC, exploit, or patch details are provided.

    0000022
    173 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-27633 TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 have a Denial of Service (DoS) vulnerability via memory exhaustion. … https://www.cve.org/CVERecord?id=CVE-2026-27633 ----- Traducción: CVE-2026-27633 Tin… http://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑27633, a denial‑of‑service vulnerability in TinyWeb versions <2.02 caused by memory exhaustion, without providing PoC, exploit, or patch details.

    0000031
    54 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-27633 TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 have a Denial of Service (DoS) vulnerability via memory exhaustion. … https://www.cve.org/CVERecord?id=CVE-2026-27633

    Post summary

    The post announces a DoS vulnerability in TinyWeb versions before 2.02 caused by memory exhaustion, with no mention of PoC, exploit, or patch.

    00000146
    56.6K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appritlabstinyweb---

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