177 lines
7.3 KiB
JSON
177 lines
7.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-19953",
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"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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"state": "PUBLISHED",
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"assignerShortName": "CPANSec",
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"dateReserved": "2026-08-15T21:13:08.480Z",
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"datePublished": "2026-08-31T17:29:42.929Z",
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"dateUpdated": "2026-09-01T15:16:50.672Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://cpan.org/modules",
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"defaultStatus": "unaffected",
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"modules": [
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"URI"
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],
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"packageName": "URI",
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"packageURL": "pkg:cpan/URI",
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"programFiles": [
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"lib/URI/_idna.pm"
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],
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"programRoutines": [
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{
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"name": "URI::_idna::nameprep"
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}
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],
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"repo": "https://github.com/libwww-perl/URI",
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"versions": [
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{
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"lessThan": "5.36",
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"status": "affected",
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"version": "0",
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"versionType": "custom"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "Naseeb Dangi (naseeb0), Nankai University"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "URI versions before 5.36 for Perl encode non-NFC host names to non-standard punycode labels via missing normalization in nameprep.\n\nnameprep lowercases each host label but performs no Unicode normalization. IDNA requires a label to be normalized to Form C before it is encoded (RFC 5891), so a label that is not already in NFC is encoded to a different A-label than its normalized form. A label built from the precomposed Devanagari sequence U+0958 U+093E encodes to xn--72b5c without normalization but to xn--11b2fg after NFC normalization, and xn--72b5c does not round-trip back to the original label.\n\nAny caller that reads host() from a URI built from untrusted input and uses it for a security decision (an allow or deny list, an SSRF filter, deduplication, a cache key) sees the non-standard label, while a client that fetches the same URL resolves the NFC form, so the check and the fetch can disagree about the host."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-1289",
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"description": "CWE-1289 Improper Validation of Unsafe Equivalence in Input",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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"shortName": "CPANSec",
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"dateUpdated": "2026-08-31T17:29:42.929Z"
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},
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"references": [
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/libwww-perl/URI/commit/956619a9e94f86d8d2c529b4e06a3674c54a73e7.patch"
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},
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{
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"tags": [
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"issue-tracking"
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],
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"url": "https://github.com/libwww-perl/URI/pull/191"
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},
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{
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"tags": [
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"release-notes"
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],
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"url": "https://metacpan.org/release/OALDERS/URI-5.36/changes"
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},
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{
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"tags": [
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"technical-description"
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],
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"url": "https://www.rfc-editor.org/rfc/rfc5891#section-5.2"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to URI 5.36 or later."
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "URI versions before 5.36 for Perl encode non-NFC host names to non-standard punycode labels via missing normalization in nameprep",
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"x_generator": {
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"engine": "cpansec-cna-tool 0.1"
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}
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},
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"adp": [
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "http://www.openwall.com/lists/oss-security/2026/08/31/14"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2026-08-31T20:07:50.422Z"
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}
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},
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 6.5,
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"attackVector": "NETWORK",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
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"integrityImpact": "LOW",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "NONE",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "LOW"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-01T15:16:46.820304Z",
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"id": "CVE-2026-19953",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-01T15:16:50.672Z"
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}
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}
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]
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}
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} |