CVE-2026-71497: jhy jsoup Cross-site Scripting
Vulnerability summary
CVE-2026-71497 is a medium (CVSS 4.7) Cross-site Scripting vulnerability in jhy jsoup. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 20.8% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 06-08-2026PublishedVulnerability first disclosed.
- 07-08-2026Last modifiedVulnerability information updated.
Description
jsoup is a Java library for working with real-world HTML. From 1.14.3 until 1.23.1, jsoup's HTML parser could incorrectly handle a malformed tag name ending in a control character, causing the tag to acquire the parsing behavior of a different element. When a custom Safelist permits certain raw-text elements, this misparsing can cause content that should remain inert text to be emitted as active markup after serialization, potentially resulting in cross-site scripting. jsoup's built-in Safelists are not affected. This issue is fixed in version 1.23.1.
CVSS metrics
7 scores · 7 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · WolfiEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · ChainguardEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · MavenEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- NVDNIST4.7MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
+0.11 pp
From 0.19% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard137 products
- airbyte-platform-bootloaderAll versions (No fix recorded)
- airbyte-platform-cronAll versions (No fix recorded)
- airbyte-platform-fips-bootloaderAll versions (No fix recorded)
- airbyte-platform-fips-cronAll versions (No fix recorded)
- airbyte-platform-fips-serverAll versions (No fix recorded)
Wolfi15 products
- apache-tika-3.1< 3.1.0-r36
- apache-tika-3.2< 3.2.3-r16 | < 3.2.3-r18
- apache-tika-3.2-compat< 3.2.3-r18
- apache-tika-3.3< 3.3.2-r1
- gradle-8< 8.14.5-r5
Debian1 product
- jsoupAll versions (No fix recorded) | < 1.23.2-1
Jhy1 product
- jsoup≥ 1.14.3, < 1.23.1
Org.jsoup1 product
- jsoup≥ 1.14.3, < 1.23.1
Ubuntu1 product
- jsoupAll versions (No fix recorded)
6 vendors · 156 products
References
10 links- github.com/jhy/jsoupPACKAGE