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CVE-2009-4535

28
FAUCET Score

CVE-2009-4535 describes a source code disclosure vulnerability affecting Mongoose web server versions 2.8.0 and earlier. An unauthenticated remote attacker can exploit this by appending a slash to a URI, revealing the source code of web pages. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having a low attack complexity, potentially leading to information disclosure. While not listed in CISA's KEV catalog, public exploit code exists on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.8.0CPE matchmatch criteria
cpe:2.3:a:valenok:mongoose:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.68%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-12309 · Apr 20, 2010
This CVE's current EPSS score of 0.0668 is in the 90th percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

freetexthost.com / 0lcsrgt3vw
ExploitURL Repurposed
pocoftheday.blogspot.com / 2009/10/mongoose-web-server-v280-remote-source_22.html
Exploit
secunia.com / advisories/36934
Vendor Advisory