CVE-2017-9802

Improper Neutralization of Input During Web Page Generation Apache Sling Servlets Post

6.1 MediumFix available

CVE-2017-9802 is a medium vulnerability (CVSS 6.1) in Apache Sling Servlets Post, published August 14, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.66%, the 89th percentile. Fixed in org.apache.sling:org.apache.sling.servlets.post 2.3.22.

The Javascript method Sling.evalString() in Apache Sling Servlets Post before 2.3.22 uses the javascript 'eval' function to parse input strings, which allows for XSS attacks by passing specially crafted input strings.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

3.66%Unchanged since Apr 14, 2021

What each source reports

NVD Score used 6.1

Record: CVE-2017-9802
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2017-9802
Updated: 2026-11-02

EUVDEUVD-2022-3162 No score

Record: EUVD-2022-3162
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8c82-9rgp-4qvr 6.1

Improper Neutralization of Input During Web Page Generation Apache Sling Servlets Post

Record: GHSA-8c82-9rgp-4qvr
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-8c82-9rgp-4qvr 6.1