139 lines
5.8 KiB
JSON
139 lines
5.8 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-2026-45734",
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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": "2026-05-13T05:51:48.667Z",
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"datePublished": "2026-08-18T15:51:07.257Z",
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"dateUpdated": "2026-08-19T14:43:38.996Z"
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},
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"containers": {
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"cna": {
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"title": "MyBB: Default CAPTCHA missing invalidation",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-837",
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"lang": "en",
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"description": "CWE-837: Improper Enforcement of a Single, Unique Action",
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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": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 5.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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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:L/PR:N/UI:N/S:U/C:N/I:L/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/mybb/mybb/security/advisories/GHSA-jrrr-f3jw-mjmc",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/mybb/mybb/security/advisories/GHSA-jrrr-f3jw-mjmc"
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},
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{
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"name": "https://github.com/mybb/mybb/commit/c2ed54f9259b9ce05728a9e657169033fe4adffc",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mybb/mybb/commit/c2ed54f9259b9ce05728a9e657169033fe4adffc"
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},
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{
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"name": "https://github.com/mybb/mybb/releases/tag/mybb_1840",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mybb/mybb/releases/tag/mybb_1840"
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},
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{
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"name": "https://mybb.com/versions/1.8.40",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://mybb.com/versions/1.8.40"
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}
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],
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"affected": [
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{
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"vendor": "mybb",
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"product": "mybb",
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"versions": [
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{
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"version": "< 1.8.40",
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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": "2026-08-18T15:51:07.257Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "MyBB is free and open source forum software. Prior to 1.8.40, the built-in CAPTCHA does not consistently enforce single-use semantics, allowing remote attackers to bypass CAPTCHA controls through challenge replay. The successful validation paths in contact.php, member.php?action=do_resendactivation, member.php?action=do_lostpw, member.php?action=do_emailuser, and sendthread.php?action=do_sendtofriend do not call captcha::invalidate_captcha() for the MyBB Default CAPTCHA selected by the captchaimage setting. A valid response can therefore be reused until a non-vulnerable endpoint invalidates it, an incorrect response is submitted, or the challenge expires. This issue is fixed in version 1.8.40."
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}
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],
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"source": {
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"advisory": "GHSA-jrrr-f3jw-mjmc",
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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": "2026-08-19T14:43:20.441189Z",
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"id": "CVE-2026-45734",
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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": "2026-08-19T14:43:38.996Z"
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}
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}
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]
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}
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} |