CVE-2026-78159
Critical · CVSS 9.8Published 2026-09-12
CVSS
9.8
Critical
EPSS
0.8%
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-78159?
The The Events Calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 6.17.3 via the parse_array function. This is due to insufficient validation of the widget 'classes' map, allowing a plain-array payload to bypass the is_safe_widget_instance() object check and reach the callable-invocation sink in Element_Classes::parse_array(). This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires that the targeted site has comments enabled on tribe_events posts and that at least one comment containing a crafted wp:legacy-widget block has been submitted, as the attack chain is triggered when do_blocks() processes the single-event HTML including the comment area.
CVSS Score Explained
CVSS 9.8 is Critical — the highest severity tier. Attackers can likely exploit this remotely with no authentication and cause full system compromise. Patch immediately.
EPSS Exploitation Probability
EPSS 0.8% — low probability of active exploitation. Can be handled in normal patch cycles.
References & Patches
- ›https://plugins.trac.wordpress.org/browser/the-events-calendar/tags/6.17.3/common/src/Tribe/Utils/Element_Classes.php#L211
- ›https://plugins.trac.wordpress.org/browser/the-events-calendar/tags/6.17.3/src/Tribe/Views/V2/Template_Bootstrap.php#L214
- ›https://plugins.trac.wordpress.org/browser/the-events-calendar/tags/6.17.3/src/Tribe/Views/V2/Widgets/Service_Provider.php#L279
- ›https://plugins.trac.wordpress.org/browser/the-events-calendar/tags/6.17.3/src/views/v2/components/messages.php#L30
- ›https://plugins.trac.wordpress.org/changeset?reponame=&old=3667866%40the-events-calendar&new=3667866%40the-events-calendar
- ›https://plugins.trac.wordpress.org/changeset?reponame=&old=3667867%40the-events-calendar&new=3667867%40the-events-calendar
- ›https://www.wordfence.com/threat-intel/vulnerabilities/id/cc2ccfeb-6df6-4fee-96a5-94f8dd131f7c?source=cve
Track vulnerabilities for your stack
Tell us what tech you run — Node.js, Python, Java, nginx, whatever — and get a weekly email when new CVEs affect it.
Recent CVEs
- CVE-2026-90554vLLM versions >=0.10.2 and <0.28.0 do not apply any audio decode-size or duration limit when extracting audio from video input for NanoNemotronVL models. In nano_nemotron_vl.py, _extract_audio_from_videos calls load_audio_pyav(BytesIO(video_bytes)) without the max_duration_s or max_decode_bytes parameters, so neither VLLM_MAX_AUDIO_DECODE_DURATION_S nor VLLM_MAX_AUDIO_DECODE_BYTES is enforced (unlike the direct audio upload path in AudioMediaIO). When a NanoNemotronVL model is served with use_audio_in_video=True, an attacker who supplies a small, highly compressed video as multimodal input can force the server to allocate gigabytes of memory during audio decoding, resulting in a denial of service. Fixed in vLLM 0.28.0.6.9
- CVE-2026-90555vLLM versions before 0.28.0 fail to validate audio sample rate headers in the transcription endpoint, allowing authenticated clients to bypass duration checks. Attackers can submit forged FLAC headers with inflated sample rates to trigger excessive memory allocation and crash the API server process affecting all tenants.7.1
- CVE-2026-90547WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate user permissions in the Bookmark plugin getBookmarks.json.php endpoint, allowing unauthenticated attackers to read chapter names from password-protected videos. Attackers can query the endpoint with a video ID parameter to retrieve sensitive chapter metadata without authentication or password verification.6.9
- CVE-2026-90548WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate user permissions in the ImageGallery list.json.php endpoint, allowing unauthenticated access to list gallery files. Attackers can retrieve filenames and URLs of password-protected image galleries by directly accessing the endpoint, then fetch the exposed files without authentication.6.9
- CVE-2026-90549WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to properly authorize access to the videosAndroid.json.php endpoint, allowing unauthenticated guests to list password-protected videos with sensitive owner information. Attackers can retrieve video metadata including owner email, lastLogin, filename, and hashId by sending an unauthenticated GET request to the endpoint.6.9
- CVE-2026-90550WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to check user authorization in the PlayerSkins mediaSession.json.php endpoint before returning video metadata. Unauthenticated attackers can request the endpoint with a video ID parameter to retrieve password-protected video titles and owner email addresses without authentication.6.9