# chromium-browser 91.0.4472.77-0ubuntu0.18.04.1: chromium-browser 91.0.4472.77-0ubuntu0.18.04.1 for Ubuntu 18.04.6 LTS (bionic) chromium-browser 91.0.4472.77-0ubuntu0.18.04.1, released January 2, 2023, fixes 36 CVEs in chromium-browser. One of them is being exploited (CVE-2021-30533); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/linux/ubuntu-bionic-chromium-browser-91.0.4472.77-0ubuntu0.18.04.1 - Platform: Linux - Released: Jan 2, 2023 - Priority: Patch now (Closes CVE-2021-30533, exploited (CISA KEV)) - CVEs: 36, exploited: 1, on CISA KEV: 1 ## Applies to | Product | Release | Fixed in | |---|---|---| | [chromium-browser](https://patchblox.com/security/data/product/linux/chromium-browser.md) | Ubuntu 18.04.6 LTS (bionic) | 91.0.4472.77-0ubuntu0.18.04.1 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2021-30533](https://patchblox.com/security/data/cve/CVE-2021-30533.md) | Patch now | Chromium: CVE-2021-30533 Insufficient policy enforcement in PopupBlocker | n/a | 0.1674 | CISA KEV | | [CVE-2021-30558](https://patchblox.com/security/data/cve/CVE-2021-30558.md) | High | chromium: chromium - security update | 8.8 | 0.1149 | | | [CVE-2021-30538](https://patchblox.com/security/data/cve/CVE-2021-30538.md) | Routine | Chromium: CVE-2021-30538 Insufficient policy enforcement in content security policy | n/a | 0.1573 | | | [CVE-2021-30517](https://patchblox.com/security/data/cve/CVE-2021-30517.md) | Routine | Chromium: CVE-2021-30517 Type Confusion in V8 | n/a | 0.0252 | | | [CVE-2021-30513](https://patchblox.com/security/data/cve/CVE-2021-30513.md) | Routine | Chromium: CVE-2021-30513 Type Confusion in V8 | n/a | 0.0196 | | | [CVE-2021-30531](https://patchblox.com/security/data/cve/CVE-2021-30531.md) | Routine | Chromium: CVE-2021-30531 Insufficient policy enforcement in Content Security Policy | n/a | 0.0174 | | | [CVE-2021-30540](https://patchblox.com/security/data/cve/CVE-2021-30540.md) | Routine | Chromium: CVE-2021-30540 Incorrect security UI in payments | n/a | 0.0144 | | | [CVE-2021-30522](https://patchblox.com/security/data/cve/CVE-2021-30522.md) | Routine | Chromium: CVE-2021-30522 Use after free in WebAudio | n/a | 0.0143 | | | [CVE-2021-30528](https://patchblox.com/security/data/cve/CVE-2021-30528.md) | Routine | Chromium: CVE-2021-30528 Use after free in WebAuthentication | n/a | 0.0135 | | | [CVE-2021-30521](https://patchblox.com/security/data/cve/CVE-2021-30521.md) | Routine | Chromium: CVE-2021-30521 Heap buffer overflow in Autofill | n/a | 0.0133 | | | [CVE-2021-30516](https://patchblox.com/security/data/cve/CVE-2021-30516.md) | Routine | Chromium: CVE-2021-30516 Heap buffer overflow in History | n/a | 0.0132 | | | [CVE-2021-30518](https://patchblox.com/security/data/cve/CVE-2021-30518.md) | Routine | Chromium: CVE-2021-30518 Heap buffer overflow in Reader Mode | n/a | 0.0132 | | | [CVE-2021-30539](https://patchblox.com/security/data/cve/CVE-2021-30539.md) | Routine | Chromium: CVE-2021-30539 Insufficient policy enforcement in content security policy | n/a | 0.0128 | | | [CVE-2021-30534](https://patchblox.com/security/data/cve/CVE-2021-30534.md) | Routine | Chromium: CVE-2021-30534 Insufficient policy enforcement in iFrameSandbox | n/a | 0.0122 | | | [CVE-2021-30512](https://patchblox.com/security/data/cve/CVE-2021-30512.md) | Routine | Chromium: CVE-2021-30512 Use after free in Notifications | n/a | 0.0121 | | | [CVE-2021-30536](https://patchblox.com/security/data/cve/CVE-2021-30536.md) | Routine | Chromium: CVE-2021-30536 Out of bounds read in V8 | n/a | 0.0120 | | | [CVE-2021-30510](https://patchblox.com/security/data/cve/CVE-2021-30510.md) | Routine | Chromium: CVE-2021-30510 Race in Aura | n/a | 0.0119 | | | [CVE-2021-30530](https://patchblox.com/security/data/cve/CVE-2021-30530.md) | Routine | Chromium: CVE-2021-30530 Out of bounds memory access in WebAudio | n/a | 0.0118 | | | [CVE-2021-30515](https://patchblox.com/security/data/cve/CVE-2021-30515.md) | Routine | Chromium: CVE-2021-30515 Use after free in File API | n/a | 0.0118 | | | [CVE-2021-30532](https://patchblox.com/security/data/cve/CVE-2021-30532.md) | Routine | Chromium: CVE-2021-30532 Insufficient policy enforcement in Content Security Policy | n/a | 0.0117 | | | [CVE-2021-30507](https://patchblox.com/security/data/cve/CVE-2021-30507.md) | Routine | Chromium: CVE-2021-30507 Inappropriate implementation in Offline | n/a | 0.0114 | | | [CVE-2021-30537](https://patchblox.com/security/data/cve/CVE-2021-30537.md) | Routine | Chromium: CVE-2021-30537 Insufficient policy enforcement in cookies | n/a | 0.0114 | | | [CVE-2021-30535](https://patchblox.com/security/data/cve/CVE-2021-30535.md) | Routine | Chromium: CVE-2021-30535 Double free in ICU | n/a | 0.0113 | | | [CVE-2021-30523](https://patchblox.com/security/data/cve/CVE-2021-30523.md) | Routine | Chromium: CVE-2021-30523 Use after free in WebRTC | n/a | 0.0110 | | | [CVE-2021-30514](https://patchblox.com/security/data/cve/CVE-2021-30514.md) | Routine | Chromium: CVE-2021-30514 Use after free in Autofill | n/a | 0.0109 | | | [CVE-2021-30529](https://patchblox.com/security/data/cve/CVE-2021-30529.md) | Routine | Chromium: CVE-2021-30529 Use after free in Bookmarks | n/a | 0.0100 | | | [CVE-2021-30526](https://patchblox.com/security/data/cve/CVE-2021-30526.md) | Routine | Chromium: CVE-2021-30526 Out of bounds write in TabStrip | n/a | 0.0099 | | | [CVE-2021-30524](https://patchblox.com/security/data/cve/CVE-2021-30524.md) | Routine | Chromium: CVE-2021-30524 Use after free in TabStrip | n/a | 0.0096 | | | [CVE-2021-30527](https://patchblox.com/security/data/cve/CVE-2021-30527.md) | Routine | Chromium: CVE-2021-30527 Use after free in WebUI | n/a | 0.0096 | | | [CVE-2021-30508](https://patchblox.com/security/data/cve/CVE-2021-30508.md) | Routine | Chromium: CVE-2021-30508 Heap buffer overflow in Media Feeds | n/a | 0.0095 | | | [CVE-2021-30519](https://patchblox.com/security/data/cve/CVE-2021-30519.md) | Routine | Chromium: CVE-2021-30519 Use after free in Payments | n/a | 0.0090 | | | [CVE-2021-30525](https://patchblox.com/security/data/cve/CVE-2021-30525.md) | Routine | Chromium: CVE-2021-30525 Use after free in TabGroups | n/a | 0.0090 | | | [CVE-2021-30511](https://patchblox.com/security/data/cve/CVE-2021-30511.md) | Routine | Chromium: CVE-2021-30511 Out of bounds read in Tab Groups | n/a | 0.0088 | | | [CVE-2021-30520](https://patchblox.com/security/data/cve/CVE-2021-30520.md) | Routine | Chromium: CVE-2021-30520 Use after free in Tab Strip | n/a | 0.0087 | | | [CVE-2021-30509](https://patchblox.com/security/data/cve/CVE-2021-30509.md) | Routine | Chromium: CVE-2021-30509 Out of bounds write in Tab Strip | n/a | 0.0082 | | | [CVE-2021-30506](https://patchblox.com/security/data/cve/CVE-2021-30506.md) | Routine | Chromium: CVE-2021-30506 Incorrect security UI in Web App Installs | n/a | 0.0082 | | --- Data as of 2026-11-12T19:57:06Z UTC. 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