CVE-2009-4535

Exp

Mongoose 2.8.0 and earlier allows remote attackers to obtain the source code for a web page by appending a / (slash) character to the URI.

Published: 2009-12-31 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4535 is rated High Exploit Risk (71.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 6.68%, 93th percentile). 4 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.82% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-4535

EDB-ID Source Kind Published Link
12309 exploit_db edb 2010-04-20 Exploit-DB ↗
9897 exploit_db edb 2009-10-23 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4535

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.85% 6.68% +3.82%
2 2025-03-30 5.30% 2.85% -2.45%
3 2025-03-29 — 5.30% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4535

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-4535

Affected software / configurations for CVE-2009-4535

Vendor Product Version Raw CPE
valenok mongoose <= 2.8.0 cpe:2.3:a:valenok:mongoose:*:*:*:*:*:*:*:*

References for CVE-2009-4535

cvelogic Threat Intelligence