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CVE-2008-2638

36
FAUCET Score

CVE-2008-2638 describes a critical static code injection vulnerability in 1Book 1.0.1 and earlier, specifically within the guestbook.php script. This flaw allows unauthenticated remote attackers to upload arbitrary PHP code via the message parameter, which is then written to data.php. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog or showing active exploitation, exploit code is publicly available on ExploitDB, though community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.1CPE matchmatch criteria
cpe:2.3:a:1-script:1-book:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
3.86%
Probability of exploitation in next 30 days
EPSS Percentile
89.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-5736 · Jun 3, 2008
This CVE's current EPSS score of 0.0386 is in the 81st percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

1scripts.net / php-scripts/index.php
secunia.com / advisories/30146
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/42854
exploit-db.com / exploits/5736
vupen.com / english/advisories/2008/1735/references