CVE-2021-45088

MEDIUMNVD 6.16.1—

6.1

XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an error page.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 52.5%
KEV: Not listed

Published

December 16, 2021

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
cve@mitrehttps://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/08/msg00006.html
cve@mitrehttps://www.debian.org/security/2022/dsa-5042
af854a3a-2127-422b-91ae-364da2661108https://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
af854a3a-2127-422b-91ae-364da2661108https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/08/msg00006.html
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5042

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 12× in last 7d / 20× 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.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 18:16 UTCOSV refresh
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-45088?

CVE-2021-45088 is a medium vulnerability published on December 16, 2021. XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an error page.

When was CVE-2021-45088 disclosed?

CVE-2021-45088 was first published in the National Vulnerability Database on December 16, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-45088 actively exploited?

CVE-2021-45088 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-45088?

CVE-2021-45088 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2021-45088?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45088, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-45088

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-45088?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (8)

Frequently asked(5)

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