Inefficient Algorithmic Complexity

Overview 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 submitting specially...

@27works/posto (>=1.0.0, <=2.0.2), @abc45676/mailer (1.0.0) +275 more potentially affected by CVE-2026-59887 via linkify-it (>=5.0.0, <=5.0.1)

linkify-it NPM version =5.0.0, =1.0.0, =0.6.0, =0.2.6, =0.0.1, =2.0.2, =2026.7.1, =1.0.0, =0.0.1, =0.0.10, =1.0.0, =2.0.1 - @anjirauto/app-gmail 0.5.2 and more Source cves: CVE-2026-59887 Source advisory: SNYK:JS-LINKIFYIT-17901217...

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...

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-2026-48801

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...

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...

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...

@27works/posto (>=1.0.0, <=2.0.2), @abc45676/mailer (1.0.0) +272 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: - @27works/posto =1.0.0, =0.6.0, =0.2.6, =0.0.1, =2.0.2, =1.0.0, =0.0.1, =0.0.10, =1.0.0, =2.0.1 - @anjirauto/app-gmail 0.5.2 -...

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...

@27works/posto (>=1.0.0, <=2.0.2), @abc45676/mailer (1.0.0) +272 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: - @27works/posto =1.0.0, =0.6.0, =0.2.6, =0.0.1, =2.0.2, =1.0.0, =0.0.1, =0.0.10, =1.0.0, =2.0.1 - @anjirauto/app-gmail 0.5.2 -...

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...

Malicious code in npm_package_dependencies_linkify_it (npm)

--- -= Per source details. Do not edit below this line.=- Source: ossf-package-analysis 540ac82200adeadb0c42901b9214e03c897e79ee20de2be6a87beb66e45393f6 The OpenSSF Package Analysis project identified 'npmpackagedependencieslinkifyit' @ 4.0.1 npm as malicious. It is considered malicious because: ...