CVE-2026-9641 (GCVE-0-2026-9641)
Vulnerability from cvelistv5 – Published: 2026-06-12 14:57 – Updated: 2026-06-14 12:38
VLAI
Title
Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations
Summary
Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations.
The default algorithm is HMAC-SHA1, which should only be used for legacy systems.
These versions default to using 1000 iterations.
Depending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-916 - Use of Password Hash With Insufficient Computational Effort
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ARODLAND | Crypt::PBKDF2 |
Affected:
0 , < 0.261630
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-9641",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-12T17:46:14.634769Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-12T17:46:30.101Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2026-06-14T12:38:27.715Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/12/5"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/13/1"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/14/1"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/14/2"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Crypt-PBKDF2",
"product": "Crypt::PBKDF2",
"repo": "https://github.com/arodland/Crypt-PBKDF2",
"vendor": "ARODLAND",
"versions": [
{
"lessThan": "0.261630",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations.\n\nThe default algorithm is HMAC-SHA1, which should only be used for legacy systems.\n\nThese versions default to using 1000 iterations.\n\nDepending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-916",
"description": "CWE-916 Use of Password Hash With Insufficient Computational Effort",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-12T14:57:30.534Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"technical-description"
],
"url": "https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2"
},
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to version 0.261630 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations",
"workarounds": [
{
"lang": "en",
"value": "Change the default algorithm to something stronger, such as \"HMACSHA2\", and the output_len accordingly (32 for SHA256).\n\nThe number of iterations should also be increased (600,000 for SHA256, for example)."
}
],
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-9641",
"datePublished": "2026-06-12T14:57:30.534Z",
"dateReserved": "2026-05-26T18:44:37.132Z",
"dateUpdated": "2026-06-14T12:38:27.715Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-9641",
"date": "2026-06-13",
"epss": "0.0002",
"percentile": "0.05677"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-9641\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2026-06-12T16:16:35.047\",\"lastModified\":\"2026-06-14T13:16:16.880\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations.\\n\\nThe default algorithm is HMAC-SHA1, which should only be used for legacy systems.\\n\\nThese versions default to using 1000 iterations.\\n\\nDepending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-916\"}]}],\"references\":[{\"url\":\"https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/06/12/5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/06/13/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/06/14/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/06/14/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"http://www.openwall.com/lists/oss-security/2026/06/12/5\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2026/06/13/1\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2026/06/14/1\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2026/06/14/2\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2026-06-14T12:38:27.715Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-9641\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-12T17:46:14.634769Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-12T17:45:22.726Z\"}}], \"cna\": {\"title\": \"Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"affected\": [{\"repo\": \"https://github.com/arodland/Crypt-PBKDF2\", \"vendor\": \"ARODLAND\", \"product\": \"Crypt::PBKDF2\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"0.261630\", \"versionType\": \"custom\"}], \"packageName\": \"Crypt-PBKDF2\", \"collectionURL\": \"https://cpan.org/modules\", \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to version 0.261630 or later.\"}], \"references\": [{\"url\": \"https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2\", \"tags\": [\"technical-description\"]}, {\"url\": \"https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes\", \"tags\": [\"release-notes\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Change the default algorithm to something stronger, such as \\\"HMACSHA2\\\", and the output_len accordingly (32 for SHA256).\\n\\nThe number of iterations should also be increased (600,000 for SHA256, for example).\"}], \"x_generator\": {\"engine\": \"cpansec-cna-tool 0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations.\\n\\nThe default algorithm is HMAC-SHA1, which should only be used for legacy systems.\\n\\nThese versions default to using 1000 iterations.\\n\\nDepending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-916\", \"description\": \"CWE-916 Use of Password Hash With Insufficient Computational Effort\"}]}], \"providerMetadata\": {\"orgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"shortName\": \"CPANSec\", \"dateUpdated\": \"2026-06-12T14:57:30.534Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-9641\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-14T12:38:27.715Z\", \"dateReserved\": \"2026-05-26T18:44:37.132Z\", \"assignerOrgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"datePublished\": \"2026-06-12T14:57:30.534Z\", \"assignerShortName\": \"CPANSec\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…