The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_sticker function in all versions up to, and including, 2.15.19. This makes it possible for authenticated attackers, with administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The prefix check intended to restrict deletion to the uploads directory can be bypassed by crafting a URL that begins with the legitimate uploads base URL but embeds ../ traversal sequences in the path portion, as the normalize_sticker function only applies esc_url_raw(), which does not strip ../ sequences, allowing the traversal payload to be stored verbatim in WordPress options.
CVE-2026-16585
Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. a secondary CVSS source baseline 7.2; 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
- 7.2
- EG Score
- 7.2(medium)
- EG Risk
- 33(Track)EG Risk 33/100SSVC: 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 computedSeverity72% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 51%
- KEV
- Not listed
Published
July 28, 2026
Last Modified
July 28, 2026
References (6)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/pack-manager.php#L764
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/rest.php#L153
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/rest.php#L285
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/rest.php#L287
- security@wordfencehttps://plugins.trac.wordpress.org/changeset/3623636/bp-better-messages/trunk/addons/stickers/rest.php?old=3527109&old_path=bp-better-messages%2Ftrunk%2Faddons%2Fstickers%2Frest.php
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/e9274957-7584-4df6-bb2a-d745510f5033?source=cve
Vendor Advisories for CVE-2026-16585(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 23× in last 7d / 110× 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 124 total refreshes for this CVE.
- 2026-08-30 01:22 UTCEPSS rescore
- 2026-08-29 23:37 UTCEG score recompute
- 2026-08-29 23:37 UTCGHSA enrichment
- 2026-08-28 21:41 UTCEPSS rescore
- 2026-08-28 03:38 UTCGHSA enrichment
- 2026-08-27 15:10 UTCEG score recompute
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- 2026-08-26 01:37 UTCEG score recompute
- 2026-08-26 01:37 UTCGHSA enrichment
- 2026-08-25 13:48 UTCEPSS rescore
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- 2026-08-25 00:41 UTCEG score recompute
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- 2026-08-24 12:06 UTCEG score recompute
- 2026-08-24 12:06 UTCGHSA enrichment
- 2026-08-23 23:29 UTCGHSA enrichment
- 2026-08-23 11:02 UTCEG score recompute
- 2026-08-23 11:02 UTCGHSA enrichment
- 2026-08-23 00:19 UTCEPSS rescore
- 2026-08-22 22:35 UTCGHSA enrichment
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- 2026-08-22 10:07 UTCEG score recompute
- 2026-08-22 10:07 UTCGHSA enrichment
- 2026-08-21 23:49 UTCEPSS rescore
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- 2026-08-21 09:12 UTCEG score recompute
- 2026-08-21 09:12 UTCGHSA enrichment
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 20:44 UTCGHSA enrichment
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- 2026-08-19 19:48 UTCEG score recompute
- 2026-08-19 19:48 UTCGHSA enrichment
- 2026-08-19 17:03 UTCEPSS rescore
- 2026-08-19 07:09 UTCGHSA enrichment
- 2026-08-18 18:40 UTCEG score recompute
- 2026-08-18 18:40 UTCGHSA enrichment
- 2026-08-18 13:48 UTCEPSS rescore
- 2026-08-18 01:23 UTCEG score recompute
- 2026-08-18 01:23 UTCGHSA enrichment
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 12:50 UTCGHSA enrichment
- 2026-08-17 00:23 UTCEG score recompute
- 2026-08-17 00:22 UTCGHSA enrichment
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 11:54 UTCEG score recompute
- 2026-08-16 11:54 UTCGHSA enrichment
- 2026-08-16 02:14 UTCEPSS rescore
- 2026-08-15 23:27 UTCGHSA enrichment
- 2026-08-15 10:59 UTCEG score recompute
- 2026-08-15 10:59 UTCGHSA enrichment
- 2026-08-15 01:30 UTCEPSS rescore
- 2026-08-14 22:31 UTCGHSA enrichment
- 2026-08-14 10:04 UTCEG score recompute
- 2026-08-14 10:04 UTCGHSA enrichment
- 2026-08-13 22:00 UTCEPSS rescore
- 2026-08-13 21:36 UTCGHSA enrichment
- 2026-08-13 09:08 UTCGHSA enrichment
- 2026-08-12 20:41 UTCEG score recompute
- 2026-08-12 20:41 UTCGHSA enrichment
- 2026-08-12 13:50 UTCEPSS rescore
- 2026-08-12 08:14 UTCGHSA enrichment
- 2026-08-11 19:47 UTCEG score recompute
- 2026-08-11 19:47 UTCGHSA enrichment
- 2026-08-11 13:42 UTCEPSS rescore
- 2026-08-11 07:20 UTCEG score recompute
- 2026-08-11 07:20 UTCGHSA enrichment
- 2026-08-11 00:00 UTCEPSS rescore
- 2026-08-10 18:52 UTCGHSA enrichment
- 2026-08-10 06:24 UTCGHSA enrichment
- 2026-08-09 17:57 UTCEG score recompute
- 2026-08-09 17:57 UTCGHSA enrichment
- 2026-08-09 13:46 UTCEPSS rescore
- 2026-08-09 05:30 UTCGHSA enrichment
- 2026-08-08 17:03 UTCEG score recompute
- 2026-08-08 17:03 UTCGHSA enrichment
- 2026-08-08 16:37 UTCEPSS rescore
- 2026-08-08 04:35 UTCEG score recompute
- 2026-08-08 04:35 UTCGHSA enrichment
- 2026-08-07 16:08 UTCGHSA enrichment
- 2026-08-07 03:40 UTCGHSA enrichment
- 2026-08-06 15:13 UTCEG score recompute
- 2026-08-06 15:13 UTCGHSA enrichment
- 2026-08-06 13:46 UTCEPSS rescore
- 2026-08-06 02:45 UTCEG score recompute
- 2026-08-06 02:45 UTCGHSA enrichment
- 2026-08-05 19:17 UTCEPSS rescore
- 2026-08-05 14:18 UTCGHSA enrichment
- 2026-08-05 01:00 UTCEG score recompute
- 2026-08-05 01:00 UTCGHSA enrichment
- 2026-08-04 15:10 UTCEPSS rescore
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- 2026-08-04 10:38 UTCEPSS rescore
- 2026-08-03 22:27 UTCEG score recompute
- 2026-08-03 22:27 UTCGHSA enrichment
- 2026-08-03 10:35 UTCEPSS rescore
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-16585?
When was CVE-2026-16585 disclosed?
Is CVE-2026-16585 actively exploited?
What is the CVSS score of CVE-2026-16585?
How do I remediate CVE-2026-16585?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-16585
Is Your Infrastructure Affected by CVE-2026-16585?
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