CVE-2021-37714 | Crafted input may cause the jsoup HTML and XML parser to get stuck, timeout, or throw unchecked exceptions

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.

Published: 2021-08-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2021-37714 is rated Moderate Risk (64.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.35%). Core evidence: EPSS rose +3.47% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-37714

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 0.88% 4.35% +3.47%
2 2026-03-01 4.35% 0.88% -3.47%
3 2026-02-04 4.35%

Full EPSS history (40 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-37714

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-37714

GitHub Security Advisory for CVE-2021-37714

OS Trackers for CVE-2021-37714

vendor priority summary link
debian not yet assigned CVE-2021-37714 not yet assigned priority: Debian including 1 source packages (jsoup), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2021-37714
redhat medium https://access.redhat.com/security/cve/CVE-2021-37714
suse high CVE-2021-37714 severity important: SUSE including 21 source package names (11-6.2:jsoup-1.14.2-150200.3.3.1, 11-6.2:jsr-305-3.0.2-150200.3.3.1, …), 63 product×package rows across 30 product lines (Container bci/openjdk-devel, Container containers/apache-pulsar, … (30 product lines)): Fixed 63. https://www.suse.com/security/cve/CVE-2021-37714/
ubuntu low CVE-2021-37714 low priority: Ubuntu including 1 source packages (jsoup), 15 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 6, needs-triage 5, ignored 3, released 1. https://ubuntu.com/security/CVE-2021-37714

Affected software / configurations for CVE-2021-37714

Vendor Product Version Raw CPE
jsoup jsoup < 1.14.2 cpe:2.3:a:jsoup:jsoup:*:*:*:*:*:*:*:*
quarkus quarkus <= 2.2.3 cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*
oracle banking_trade_finance 14.5 cpe:2.3:a:oracle:banking_trade_finance:14.5:*:*:*:*:*:*:*
oracle banking_treasury_management 14.5 cpe:2.3:a:oracle:banking_treasury_management:14.5:*:*:*:*:*:*:*
oracle business_process_management_suite 12.2.1.3.0 cpe:2.3:a:oracle:business_process_management_suite:12.2.1.3.0:*:*:*:*:*:*:*
oracle business_process_management_suite 12.2.1.4.0 cpe:2.3:a:oracle:business_process_management_suite:12.2.1.4.0:*:*:*:*:*:*:*
oracle flexcube_universal_banking >= 14.0.0, <= 14.3.0 cpe:2.3:a:oracle:flexcube_universal_banking:*:*:*:*:*:*:*:*
oracle flexcube_universal_banking 14.5 cpe:2.3:a:oracle:flexcube_universal_banking:14.5:*:*:*:*:*:*:*
oracle hospitality_token_proxy_service 19.2 cpe:2.3:a:oracle:hospitality_token_proxy_service:19.2:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.58 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.59 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
oracle primavera_unifier 20.12 cpe:2.3:a:oracle:primavera_unifier:20.12:*:*:*:*:*:*:*
oracle primavera_unifier 21.12 cpe:2.3:a:oracle:primavera_unifier:21.12:*:*:*:*:*:*:*
oracle retail_customer_management_and_segmentation_foundation >= 17.0, <= 19.0 cpe:2.3:a:oracle:retail_customer_management_and_segmentation_foundation:*:*:*:*:*:*:*:*
oracle webcenter_portal 12.2.1.3.0 cpe:2.3:a:oracle:webcenter_portal:12.2.1.3.0:*:*:*:*:*:*:*
oracle webcenter_portal 12.2.1.4.0 cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:*
oracle communications_messaging_server 8.1 cpe:2.3:o:oracle:communications_messaging_server:8.1:*:*:*:*:*:*:*
netapp management_services_for_element_software_and_netapp_hci cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.2.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.2.0:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.3.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.3.0:*:*:*:*:*:*:*
oracle middleware_common_libraries_and_tools 12.2.1.3.0 cpe:2.3:a:oracle:middleware_common_libraries_and_tools:12.2.1.3.0:*:*:*:*:*:*:*
oracle middleware_common_libraries_and_tools 12.2.1.4.0 cpe:2.3:a:oracle:middleware_common_libraries_and_tools:12.2.1.4.0:*:*:*:*:*:*:*
oracle stream_analytics < 19.1.0.0.6.4 cpe:2.3:a:oracle:stream_analytics:*:*:*:*:*:*:*:*
oracle stream_analytics 19c cpe:2.3:a:oracle:stream_analytics:19c:*:*:*:*:*:*:*

References for CVE-2021-37714

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