BuddyPress 14.4.0 contains a regular expression injection vulnerability in the activity mention resolver that, when username compatibility mode is enabled, allows attackers to manipulate a REGEXP database clause by crafting mention names containing regex metacharacters. Attackers can submit @mentions whose metacharacters pass through esc_sql unescaped and are inserted into an unprepared REGEXP query against the users table, enabling boolean-based inference of usernames and denial of service through catastrophic backtracking.
CVE-2026-53674
Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-10. a secondary CVSS source baseline 7.1; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.1
- EG Score
- 7.1(medium)
- EG Risk
- 37(Track)EG Risk 37/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 29%
- KEV
- Not listed
Published
June 10, 2026
Last Modified
July 23, 2026
Advisory Details (3)
Auto-updated Jun 12, 2026BuddyPress 14.4.0 REGEXP Injection via @Mention Username Resolution | Advisories | VulnCheck
https://www.vulncheck.com/advisories/buddypress-regexp-injection-via-mention-username-resolutionVendor Advisories for CVE-2026-53674(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 18× in last 7d / 94× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 229 total refreshes for this CVE.
- 2026-08-25 13:49 UTCEPSS rescore
- 2026-08-25 00:30 UTCEG score recompute
- 2026-08-25 00:30 UTCGHSA enrichment
- 2026-08-23 23:44 UTCGHSA enrichment
- 2026-08-23 10:57 UTCEG score recompute
- 2026-08-23 10:57 UTCGHSA enrichment
- 2026-08-23 00:19 UTCEPSS rescore
- 2026-08-21 23:49 UTCEPSS rescore
- 2026-08-21 23:34 UTCGHSA enrichment
- 2026-08-21 10:31 UTCEG score recompute
- 2026-08-21 10:31 UTCGHSA enrichment
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 21:43 UTCGHSA enrichment
- 2026-08-20 08:54 UTCEG score recompute
- 2026-08-20 08:54 UTCGHSA enrichment
- 2026-08-19 17:04 UTCEPSS rescore
- 2026-08-19 15:37 UTCEG score recompute
- 2026-08-19 15:37 UTCGHSA enrichment
- 2026-08-18 13:48 UTCEPSS rescore
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 03:36 UTCEG score recompute
- 2026-08-17 03:36 UTCGHSA enrichment
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 14:49 UTCEG score recompute
- 2026-08-16 14:49 UTCGHSA enrichment
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- 2026-08-16 02:14 UTCEPSS rescore
- 2026-08-16 02:02 UTCGHSA enrichment
- 2026-08-15 13:13 UTCEG score recompute
- 2026-08-15 13:13 UTCGHSA enrichment
- 2026-08-15 01:30 UTCEPSS rescore
- 2026-08-14 23:52 UTCGHSA enrichment
- 2026-08-14 11:05 UTCGHSA enrichment
- 2026-08-13 22:18 UTCEG score recompute
- 2026-08-13 22:18 UTCGHSA enrichment
- 2026-08-13 22:00 UTCEPSS rescore
- 2026-08-13 07:54 UTCGHSA enrichment
- 2026-08-12 18:24 UTCEG score recompute
- 2026-08-12 18:24 UTCGHSA enrichment
- 2026-08-12 13:51 UTCEPSS rescore
- 2026-08-12 05:28 UTCGHSA enrichment
- 2026-08-11 16:41 UTCEG score recompute
- 2026-08-11 16:41 UTCGHSA enrichment
- 2026-08-11 03:54 UTCEG score recompute
- 2026-08-11 03:54 UTCGHSA enrichment
- 2026-08-11 00:00 UTCEPSS rescore
- 2026-08-10 15:07 UTCGHSA enrichment
- 2026-08-10 02:20 UTCEG score recompute
- 2026-08-10 02:20 UTCGHSA enrichment
- 2026-08-09 13:46 UTCEPSS rescore
- 2026-08-09 13:33 UTCGHSA enrichment
- 2026-08-09 00:47 UTCEG score recompute
- 2026-08-09 00:47 UTCGHSA enrichment
- 2026-08-08 16:37 UTCEPSS rescore
- 2026-08-08 12:00 UTCGHSA enrichment
- 2026-08-07 23:13 UTCEG score recompute
- 2026-08-07 23:13 UTCGHSA enrichment
- 2026-08-07 10:26 UTCGHSA enrichment
- 2026-08-06 21:39 UTCEG score recompute
- 2026-08-06 21:39 UTCGHSA enrichment
- 2026-08-06 13:47 UTCEPSS rescore
- 2026-08-06 08:51 UTCGHSA enrichment
- 2026-08-05 20:04 UTCEG score recompute
- 2026-08-05 20:04 UTCGHSA enrichment
- 2026-08-05 19:17 UTCEPSS rescore
- 2026-08-04 16:59 UTCEG score recompute
- 2026-08-04 16:59 UTCGHSA enrichment
- 2026-08-04 15:10 UTCEPSS rescore
- 2026-08-04 10:39 UTCEPSS rescore
- 2026-08-04 03:41 UTCGHSA enrichment
- 2026-08-03 14:54 UTCEG score recompute
- 2026-08-03 14:54 UTCGHSA enrichment
- 2026-08-03 10:36 UTCEPSS rescore
- 2026-08-03 00:23 UTCGHSA enrichment
- 2026-08-02 11:22 UTCEG score recompute
- 2026-08-02 11:22 UTCGHSA enrichment
- 2026-08-02 02:27 UTCEPSS rescore
- 2026-08-01 22:35 UTCGHSA enrichment
- 2026-08-01 09:47 UTCEG score recompute
- 2026-08-01 09:47 UTCGHSA enrichment
- 2026-08-01 04:16 UTCEPSS rescore
- 2026-07-31 13:45 UTCGHSA enrichment
- 2026-07-31 00:47 UTCEG score recompute
- 2026-07-31 00:47 UTCGHSA enrichment
- 2026-07-30 16:28 UTCEPSS rescore
- 2026-07-30 10:01 UTCEG score recompute
- 2026-07-30 10:00 UTCGHSA enrichment
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-29 17:56 UTCGHSA enrichment
- 2026-07-29 05:09 UTCEG score recompute
- 2026-07-29 05:09 UTCGHSA enrichment
- 2026-07-28 15:37 UTCEPSS rescore
- 2026-07-28 02:34 UTCEG score recompute
- 2026-07-28 02:34 UTCGHSA enrichment
- 2026-07-27 09:52 UTCGHSA enrichment
- 2026-07-26 21:06 UTCEG score recompute
- 2026-07-26 21:05 UTCGHSA enrichment
- 2026-07-26 14:54 UTCEPSS rescore
- 2026-07-26 05:23 UTCEG score recompute
- 2026-07-26 05:23 UTCGHSA enrichment
- 2026-07-25 14:18 UTCEPSS rescore
Frequently asked(5)
What is CVE-2026-53674?
When was CVE-2026-53674 disclosed?
Is CVE-2026-53674 actively exploited?
What is the CVSS score of CVE-2026-53674?
How do I remediate CVE-2026-53674?
Dependency Blast Radius
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