How severe is CVE-2016-4807?

CVE-2016-4807 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-4807 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4807?

CVE-2016-4807 affects Web2py. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4807?

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

When was CVE-2016-4807 published?

CVE-2016-4807 was published on 2017-01-11 and last updated on 2026-06-17.

CVE-2016-4807

CVE-2016-4807 is a medium-severity vulnerability in Web2py with a CVSS 3.x base score of 4.8. 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 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Web2py
Published: 2017-01-11
Last modified: 2026-06-17

Description

Web2py versions 2.14.5 and below was affected by Reflected XSS vulnerability, which allows an attacker to perform an XSS attack on logged in user (admin).

Frequently asked questions

What is CVE-2016-4807?: Web2py versions 2.14.5 and below was affected by Reflected XSS vulnerability, which allows an attacker to perform an XSS attack on logged in user (admin).
How severe is CVE-2016-4807?: CVE-2016-4807 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-4807 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4807?: CVE-2016-4807 affects Web2py. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4807?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4807 published?: CVE-2016-4807 was published on 2017-01-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:web2py:web2py:*:*:*:*:*:*:*:*

More vulnerabilities in Web2py

CVE-2023-45158 — Critical (CVSS 9.8): An OS command injection vulnerability exists in web2py 2.24.1 and earlier. When the product is configured to use…
CVE-2016-3957 — Critical (CVSS 9.8): The secure_load function in gluon/utils.py in web2py before 2.14.2 uses pickle.loads to deserialize session information…
CVE-2016-3953 — Critical (CVSS 9.8): The sample web application in web2py before 2.14.2 might allow remote attackers to execute arbitrary code via vectors…
CVE-2016-10321 — Critical (CVSS 9.8): web2py before 2.14.6 does not properly check if a host is denied before verifying passwords, allowing a remote attacker…
CVE-2016-4808 — High (CVSS 8.8): Web2py versions 2.14.5 and below was affected by CSRF (Cross Site Request Forgery) vulnerability, which allows an…
CVE-2016-3952 — High (CVSS 7.8): web2py before 2.14.1, when using the standalone version, allows remote attackers to obtain environment variable values…

All CVEs affecting Web2py →

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 →