The vulnerability of theEncodeAlphaInternal() function in the libwebp library allows for manipulation of image encoding and decoding processes in the WebP format by browsers such as Mozilla Firefox, Firefox ESR, and the email client Thunderbird. This vulnerability enables a malicious actor to cause service interruptions.
🗓️ 31 May 2023 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 8 Views
| Reporter | Title | Published | Views | Family All 297 |
|---|---|---|---|---|
 | Security Bulletin: IBM QRadar SIEM includes components with known vulnerabilities | 6 Jul 202318:48 | – | ibm |
 | Amazon Linux 2023 : libwebp, libwebp-devel, libwebp-java (ALAS2023-2023-185) | 8 Jun 202300:00 | – | nessus |
| Amazon Linux 2 : thunderbird (ALAS-2023-2028) | 2 May 202300:00 | – | nessus |
| Amazon Linux 2 : firefox (ALASFIREFOX-2023-005) | 27 Sep 202300:00 | – | nessus |
| Alibaba Cloud Linux 3 : 0115: libwebp (ALINUX3-SA-2023:0115) | 14 May 202500:00 | – | nessus |
| AlmaLinux 8 : libwebp (ALSA-2023:2076) | 3 May 202300:00 | – | nessus |
| AlmaLinux 9 : libwebp (ALSA-2023:2078) | 3 May 202300:00 | – | nessus |
| CentOS 8 : firefox (CESA-2023:1787) | 8 Feb 202400:00 | – | nessus |
| CentOS 8 : thunderbird (CESA-2023:1802) | 8 Feb 202400:00 | – | nessus |
| CentOS 7 : firefox (RHSA-2023:1791) | 25 Apr 202300:00 | – | nessus |
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01 Jun 2026 00:00Current
6.6Medium risk
Vulners AI Score6.6
CVSS 37.5
CVSS 27.6
EPSS0.00952