CVE-2026-13576 (GCVE-0-2026-13576)
Vulnerability from cvelistv5
Published
2026-10-30 13:09
Modified
2026-10-30 13:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes.
Passwords are hashed with hmac_sha1_sum() from Mojo::Util with no key, a single fast SHA-1 HMAC. There is no salt, so equal passwords give equal hashes, and no work factor slows down guessing.
An attacker who obtains the user table can recover passwords by fast offline guessing.
References
| URL | Tags | |
|---|---|---|
{
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"modules": [
"CallBackery"
],
"packageName": "CallBackery",
"packageURL": "pkg:cpan/CallBackery",
"programFiles": [
"lib/CallBackery/User.pm",
"lib/CallBackery/GuiPlugin/UserForm.pm"
],
"programRoutines": [
{
"name": "CallBackery::User::login"
},
{
"name": "CallBackery::GuiPlugin::UserForm::actionCfg"
}
],
"repo": "https://github.com/oetiker/callbackery",
"versions": [
{
"lessThan": "0.62.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes.\n\nPasswords are hashed with hmac_sha1_sum() from Mojo::Util with no key, a single fast SHA-1 HMAC. There is no salt, so equal passwords give equal hashes, and no work factor slows down guessing.\n\nAn attacker who obtains the user table can recover passwords by fast offline guessing."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-916",
"description": "CWE-916 Use of Password Hash With Insufficient Computational Effort",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-759",
"description": "CWE-759 Use of a One-Way Hash without a Salt",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T13:09:47.702Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to CallBackery 0.62.0 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-13576",
"datePublished": "2026-10-30T13:09:47.702Z",
"dateReserved": "2026-06-28T20:49:43.680Z",
"dateUpdated": "2026-10-30T13:09:47.702Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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