High 8.7Published Sep 17, 2026

CVE-2026-77615Paella Player: Stored XSS via caption cue text

Updated under an hour ago (Oct 27, 2026, 12:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Paella Player is a set of libraries to create a multi stream video player. Prior to Paella Player 2.12.11 (as used in Opencast prior to 19.7 and 20.2), there is a potential XSS attack though closed captions cue text. This vulnerability is fixed in 2.12.11.

CVSS: 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

opencast opencast opencast:opencast (from the name)	before 19.7; from 20.0, < 20.2	CNA record
polimediaupv paella-player polimediaupv:paella_player (from the name)	before 2.12.11	CNA record

References

References

https://github.com/opencast/opencast/security/advisories/GHSA-m6c8-jcw2-5r25	x-refsource-confirm
https://github.com/opencast/opencast/pull/7736	x-refsource-misc
https://github.com/opencast/opencast/commit/701682c635f668228c3e8fb7b4564b3294788e40	x-refsource-misc
https://github.com/polimediaupv/paella-core/commit/94a36490808ac5a1f60a0745d71ec9253f6d206b	x-refsource-misc
https://github.com/polimediaupv/paella-core/commit/9b2f14ec4cf55efaf4c045c77a5ed8f5ec559ab4	x-refsource-misc
https://github.com/polimediaupv/paella-player/commit/6fe4af7306044198c8e91e2e7f4128428b83cf03	x-refsource-misc
https://github.com/opencast/opencast/releases/tag/19.7	x-refsource-misc
https://github.com/opencast/opencast/releases/tag/20.2	x-refsource-misc
https://github.com/polimediaupv/paella-player/blob/a1b6c42467938a00a4b4d0b8c68435cd4f9d2a16/repos/paella-core/CHANGELOG.md?plain=1#L21	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.