Inefficient Algorithmic Complexity

Overview org.webjars.npm:linkify-it is a Links recognition library with FULL unicode support Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the mailto: validator scan-loop on attacker-supplied text. An attacker can cause excessive CPU consumption by...

CVE-2026-59887

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

CVE-2026-59887

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

CVE-2026-59887 linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

CVE-2026-59887 linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

08cms (1.0.0), 0xrtest (1.0.0) +15485 more potentially affected by CVE-2026-59887 via linkify-it (>=0.1.2, <=5.0.1)

linkify-it NPM version =0.1.2, =1.0.0, =0.1.0, =1.0.0, =0.0.2, =0.0.5, =4.11.0, =4.11.46 - 8-divine 1.4.0 and more Source cves: CVE-2026-59887 Source advisory: MEND:CVE-2026-59887...

CVE-2026-59887

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

CVE-2026-59887 linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

CVE-2026-59887: Inefficient Algorithmic Complexity

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test and .match can be invoked at every mailto: occurrence and scan the remaining input through srcemailname in lib/re.mjs, causing On^2 CPU consumption on crafted user text...

CVE-2026-48801

creationtimestamp| type| source ---|---|--- 2026-06-26 22:35:32+00:00| published-proof-of-concept| https://github.com/markdown-it/linkify-it/security/advisories/GHSA-22p9-wv53-3rq4 2026-07-14 23:48:48+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3mqnfglsj4s2w 2026-07-27...

@activeboxes/piece-gmail (0.8.1), @activeboxes/piece-imap (0.2.10) +96 more potentially affected by CVE-2022-21670 +1 more via linkify-it (5.0.0)

linkify-it NPM version 5.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on linkify-it and may be impacted: - @activeboxes/piece-gmail 0.8.1 - @activeboxes/piece-imap 0.2.10 - @activepieces/piece-gmail =0.6.0, =0.2.6, =0.0.1, =1.0.0, =1.0.6 -...

Regular Expression Denial of Service (ReDoS)

Overview org.webjars.npm:linkify-it is a Links recognition library with FULL unicode support Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS due to quadratic algorithmic complexity in the match function. An attacker can exhaust CPU resources and caus...

@activeboxes/piece-gmail (0.8.1), @activeboxes/piece-imap (0.2.10) +96 more potentially affected by CVE-2026-48801 via linkify-it (5.0.0)

linkify-it NPM version 5.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on linkify-it and may be impacted: - @activeboxes/piece-gmail 0.8.1 - @activeboxes/piece-imap 0.2.10 - @activepieces/piece-gmail =0.6.0, =0.2.6, =0.0.1, =1.0.0, =1.0.6 -...

GHSA-22P9-WV53-3RQ4 LinkifyIt#match scan loop has quadratic algorithmic complexity

Summary LinkifyIt.prototype.match — the package's primary public API — has ON² algorithmic complexity for inputs containing many fuzzy links or emails. This is not a regex backtrack bug; it's a structural issue in the JS-level scan loop that re-slices the input and re-runs unanchored regex search...

@activeboxes/piece-gmail (0.8.1), @activeboxes/piece-imap (0.2.10) +96 more potentially affected by CVE-2022-21670 +1 more via linkify-it (5.0.0)

linkify-it NPM version 5.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on linkify-it and may be impacted: - @activeboxes/piece-gmail 0.8.1 - @activeboxes/piece-imap 0.2.10 - @activepieces/piece-gmail =0.6.0, =0.2.6, =0.0.1, =1.0.0, =1.0.6 -...

LinkifyIt#match scan loop has quadratic algorithmic complexity

Summary LinkifyIt.prototype.match — the package's primary public API — has ON² algorithmic complexity for inputs containing many fuzzy links or emails. This is not a regex backtrack bug; it's a structural issue in the JS-level scan loop that re-slices the input and re-runs unanchored regex search...

Regular Expression Denial of Service (ReDoS)

Overview linkify-it is a Links recognition library with FULL unicode support Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS due to quadratic algorithmic complexity in the match function. An attacker can exhaust CPU resources and cause significant...

PT-2026-53018

Name of the Vulnerable Software and Affected Versions linkify-it versions prior to 5.0.1 Description LinkifyIt.prototype.match the primary public API contains a structural issue in its JavaScript-level scan loop that results in ON² algorithmic complexity when processing inputs with numerous fuzzy...

GHSA-G75F-G53V-794X Bleach linkify(parse_email=True) CPU exhaustion via unbounded email regex scanning

Summary Bleach 6.3.0 exposes a documented email-linkification path through bleach.linkify..., parseemail=True. The implementation scans attacker-controlled text with EMAILRE.finditer over the full character token and has no length, timeout, or linear prefilter before applying the dot-atom email...

CVE-2026-40565

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, FreeScout's linkify function in app/Misc/Helper.php converts plain-text URLs in email bodies into HTML anchor tags without escaping double-quote characters " in the URL. HTMLPurifier called first via...