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Vulnerability record · CVE-2021-37714 · published 18 August 2021

CVE-2021-37714: Jsoup vulnerability

Jsoup · Jsoup

jsoup is a Java library for working with HTML. Those using jsoup versions prior to 1.14.2 to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. The issue is patched in version 1.14.2. There are a few available workarounds. Users may rate limit input parsing, limit the size of inputs based on system resources, and/or implement thread watchdogs to cap and timeout parse runtimes.

7.5 CVSS 3.1 High EPSS 6.9% · top 6.2% CWE-248 · CWE-248CWE-835 · CWE-835
7.5CVSS 3.1 base score, v2 5.0
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
16Affected product versions listed by NVD
28References
17 Jun 2026Last modified by NVD

Description

jsoup is a Java library for working with HTML. Those using jsoup versions prior to 1.14.2 to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. The issue is patched in version 1.14.2. There are a few available workarounds. Users may rate limit input parsing, limit the size of inputs based on system resources, and/or implement thread watchdogs to cap and timeout parse runtimes.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

16 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/jhy/jsoup/security/advisories/GHSA-m72m-mhq2-9p6c Third Party Advisory
https://jsoup.org/news/release-1.14.1 Release NotesVendor Advisory
https://jsoup.org/news/release-1.14.2 Release NotesVendor Advisory
https://lists.apache.org/thread.html/r215009dbf7467a9f6506d0c0024cb36cad30071010e62c9352cfaaf0%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r377b93d79817ce649e9e68b3456e6f499747ef1643fa987b342e082e%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r3d71f18adb78e50f626dde689161ca63d3b7491bd9718fcddfaecba7%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r50e9c9466c592ca9d707a5dea549524d19e3287da08d8392f643960e%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r685c5235235ad0c26e86d0ee987fb802c9675de6081dbf0516464e0b%40%3Cnotifications.james.
https://lists.apache.org/thread.html/r97404676a5cf591988faedb887d64e278f522adcaa823d89ca69defe%40%3Cnotifications.james.
https://lists.apache.org/thread.html/rc3354080fc67fb50b45b3c2d12dc4ca2a3c1c78dad3d3ba012c038aa%40%3Cnotifications.james.
https://security.netapp.com/advisory/ntap-20220210-0022/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
https://github.com/jhy/jsoup/security/advisories/GHSA-m72m-mhq2-9p6c Third Party Advisory
https://jsoup.org/news/release-1.14.1 Release NotesVendor Advisory
https://jsoup.org/news/release-1.14.2 Release NotesVendor Advisory
https://lists.apache.org/thread.html/r215009dbf7467a9f6506d0c0024cb36cad30071010e62c9352cfaaf0%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r377b93d79817ce649e9e68b3456e6f499747ef1643fa987b342e082e%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r3d71f18adb78e50f626dde689161ca63d3b7491bd9718fcddfaecba7%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r50e9c9466c592ca9d707a5dea549524d19e3287da08d8392f643960e%40%3Cissues.maven.apache.
https://lists.apache.org/thread.html/r685c5235235ad0c26e86d0ee987fb802c9675de6081dbf0516464e0b%40%3Cnotifications.james.
https://lists.apache.org/thread.html/r97404676a5cf591988faedb887d64e278f522adcaa823d89ca69defe%40%3Cnotifications.james.
https://lists.apache.org/thread.html/rc3354080fc67fb50b45b3c2d12dc4ca2a3c1c78dad3d3ba012c038aa%40%3Cnotifications.james.
https://security.netapp.com/advisory/ntap-20220210-0022/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-37714), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.