CVE-2026-33707 (GCVE-0-2026-33707)
Vulnerability from cvelistv5 – Published: 2026-04-10 18:52 – Updated: 2026-04-10 18:52
VLAI?
Title
Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms
Summary
Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email) with no random component, no expiration, and no rate limiting. An attacker who knows a user's email can compute the reset token and change the victim's password without authentication. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.
Severity ?
9.4 (Critical)
CWE
- CWE-640 - Weak Password Recovery Mechanism for Forgotten Password
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| chamilo | chamilo-lms |
Affected:
< 1.11.38
Affected: >= 2.0.0-alpha.1, < 2.0.0-RC.3 |
{
"containers": {
"cna": {
"affected": [
{
"product": "chamilo-lms",
"vendor": "chamilo",
"versions": [
{
"status": "affected",
"version": "\u003c 1.11.38"
},
{
"status": "affected",
"version": "\u003e= 2.0.0-alpha.1, \u003c 2.0.0-RC.3"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email) with no random component, no expiration, and no rate limiting. An attacker who knows a user\u0027s email can compute the reset token and change the victim\u0027s password without authentication. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-640",
"description": "CWE-640: Weak Password Recovery Mechanism for Forgotten Password",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-10T18:52:54.097Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-f27g-66gq-g7v2",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-f27g-66gq-g7v2"
},
{
"name": "https://github.com/chamilo/chamilo-lms/commit/078d7e5b77679fa7ccfcd6783bd5cc683db0bda8",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/chamilo/chamilo-lms/commit/078d7e5b77679fa7ccfcd6783bd5cc683db0bda8"
},
{
"name": "https://github.com/chamilo/chamilo-lms/commit/750a45312a0d5c3ad60dbfbd0d959ca40be4a18c",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/chamilo/chamilo-lms/commit/750a45312a0d5c3ad60dbfbd0d959ca40be4a18c"
}
],
"source": {
"advisory": "GHSA-f27g-66gq-g7v2",
"discovery": "UNKNOWN"
},
"title": "Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-33707",
"datePublished": "2026-04-10T18:52:54.097Z",
"dateReserved": "2026-03-23T17:06:05.747Z",
"dateUpdated": "2026-04-10T18:52:54.097Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-33707\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-04-10T19:16:23.950\",\"lastModified\":\"2026-04-10T19:16:23.950\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email) with no random component, no expiration, and no rate limiting. An attacker who knows a user\u0027s email can compute the reset token and change the victim\u0027s password without authentication. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L\",\"baseScore\":9.4,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":5.5}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-640\"}]}],\"references\":[{\"url\":\"https://github.com/chamilo/chamilo-lms/commit/078d7e5b77679fa7ccfcd6783bd5cc683db0bda8\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/chamilo/chamilo-lms/commit/750a45312a0d5c3ad60dbfbd0d959ca40be4a18c\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-f27g-66gq-g7v2\",\"source\":\"security-advisories@github.com\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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