132 lines
6.0 KiB
JSON
132 lines
6.0 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-2026-23996",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-01-19T18:49:20.658Z",
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"datePublished": "2026-01-21T22:29:24.107Z",
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"dateUpdated": "2026-01-22T16:49:16.733Z"
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},
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"containers": {
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"cna": {
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"title": "FastAPI Api Key has a timing side-channel in verify_key that allows statistical key validity detection",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-208",
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"lang": "en",
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"description": "CWE-208: Observable Timing Discrepancy",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 3.7,
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"baseSeverity": "LOW",
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"confidentialityImpact": "LOW",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/Athroniaeth/fastapi-api-key/security/advisories/GHSA-95c6-p277-p87g",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/Athroniaeth/fastapi-api-key/security/advisories/GHSA-95c6-p277-p87g"
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},
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{
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"name": "https://github.com/Athroniaeth/fastapi-api-key/commit/310b2c5c77305f38c63c0b917539a0344071dfd8",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/Athroniaeth/fastapi-api-key/commit/310b2c5c77305f38c63c0b917539a0344071dfd8"
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},
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{
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"name": "https://github.com/Athroniaeth/fastapi-api-key/releases/tag/1.1.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/Athroniaeth/fastapi-api-key/releases/tag/1.1.0"
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}
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],
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"affected": [
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{
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"vendor": "Athroniaeth",
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"product": "fastapi-api-key",
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"versions": [
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{
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"version": "< 1.1.0",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-01-21T22:29:24.107Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "FastAPI Api Key provides a backend-agnostic library that provides an API key system. Version 1.1.0 has a timing side-channel vulnerability in verify_key(). The method applied a random delay only on verification failures, allowing an attacker to statistically distinguish valid from invalid API keys by measuring response latencies. With enough repeated requests, an adversary could infer whether a key_id corresponds to a valid key, potentially accelerating brute-force or enumeration attacks. All users relying on verify_key() for API key authentication prior to the fix are affected. Users should upgrade to version 1.1.0 to receive a patch. The patch applies a uniform random delay (min_delay to max_delay) to all responses regardless of outcome, eliminating the timing correlation. Some workarounds are available. Add an application-level fixed delay or random jitter to all authentication responses (success and failure) before the fix is applied and/or use rate limiting to reduce the feasibility of statistical timing attacks."
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}
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],
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"source": {
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"advisory": "GHSA-95c6-p277-p87g",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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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": "2026-01-22T15:09:24.050000Z",
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"id": "CVE-2026-23996",
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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": "no"
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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": "2026-01-22T16:49:16.733Z"
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}
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}
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]
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}
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} |