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CVE-2019-13948

19
FAUCET Score

CVE-2019-13948 describes a stored Cross-Site Scripting (XSS) vulnerability in SyGuestBook A5 version 1.2, stemming from insufficient input validation in the isValidData function within include/functions.php. This medium-severity vulnerability (CVSS 5.4) allows an authenticated attacker to inject malicious scripts, potentially leading to information disclosure or limited integrity impact on other users, requiring user interaction to trigger. Despite its potential, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not a widely targeted threat.

Impacted Technologies

VendorProductVersion(s)CPE
1.2CPE matchmatch criteria
cpe:2.3:a:syguestbook_a5_project:syguestbook_a5:1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 83rd percentile among its peer group of 15,239 CVEs.

Social Chatter

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

fragrant10.github.io / 2019/02/22/SyGuestBookA5%E4%BB%A3%E7%A0%81%E5%AE%A1%E8%AE%A1.html
ExploitThird Party Advisory
github.com / fragrant10/fragrant10.github.io/blob/master/_posts/2019-02-22-SyGuestBookA5%E4%BB%A3%E7%A0%81%E5%AE%A1%E8%AE%A1.md
ExploitThird Party Advisory