CVE Explorer

CVE-2026-12108

The Highlighting Code Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_htm

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fbe3480fd401d5f711b79ca961e70d689c14ab8c03f55009e176b53bb2eb61a0

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Highlighting Code Block","vendor":"looswebstudio","versions":[{"lessThanOrEqual":"2.2.0","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":4.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/problemTypes/0/descriptions/0

Source references

8 source assertions

{"url":"https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.1.3/class/loos_hcb.php#L158"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/4

{"url":"https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.1.3/class/loos_hcb_menu.php#L23"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/5

{"url":"https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.1.3/class/loos_hcb_scripts.php#L69"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/6

{"url":"https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.2.0/class/loos_hcb.php#L158"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/1

{"url":"https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.2.0/class/loos_hcb_menu.php#L23"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/2

{"url":"https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.2.0/class/loos_hcb_scripts.php#L69"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/3

{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3592103%40highlighting-code-block&new=3592103%40highlighting-code-block"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/7

{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/166e1d3a-3fd9-4ab0-ba0d-707c6d59e0cd?source=cve"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c53c55a2ab17467c0ee31014dc48de721f555c5d855e2e7a5c10b58dc0796ad6 · sha256:0cd5b74b0d6d7076… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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