How severe is CVE-2019-13948?

CVE-2019-13948 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-13948 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13948?

CVE-2019-13948 affects Syguestbook A5 Project Syguestbook A5. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13948?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-13948 published?

CVE-2019-13948 was published on 2019-07-18 and last updated on 2026-06-17.

CVE-2019-13948

CVE-2019-13948 is a medium-severity vulnerability in Syguestbook A5 Project Syguestbook A5 with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Syguestbook A5 Project Syguestbook A5
Published: 2019-07-18
Last modified: 2026-06-17

Description

SyGuestBook A5 Version 1.2 allows stored XSS because the isValidData function in include/functions.php does not properly block XSS payloads, as demonstrated by a crafted use of the onerror attribute of an IMG element.

Frequently asked questions

What is CVE-2019-13948?: SyGuestBook A5 Version 1.2 allows stored XSS because the isValidData function in include/functions.php does not properly block XSS payloads, as demonstrated by a crafted use of the onerror attribute of an IMG element.
How severe is CVE-2019-13948?: CVE-2019-13948 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-13948 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13948?: CVE-2019-13948 affects Syguestbook A5 Project Syguestbook A5. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13948?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-13948 published?: CVE-2019-13948 was published on 2019-07-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:syguestbook_a5_project:syguestbook_a5:1.2:*:*:*:*:*:*:*

More vulnerabilities in Syguestbook A5 Project Syguestbook A5

CVE-2019-13949 — High (CVSS 8.8): SyGuestBook A5 Version 1.2 has no CSRF protection mechanism, as demonstrated by CSRF for an…
CVE-2019-13950 — Medium (CVSS 5.4): index.php?c=admin&a=index in SyGuestBook A5 Version 1.2 has stored XSS via a reply to a comment.

All CVEs affecting Syguestbook A5 Project Syguestbook A5 →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →