How severe is CVE-2026-50883?

CVE-2026-50883 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-50883 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-50883?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-50883 have an EU (EUVD) identifier?

Yes. CVE-2026-50883 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36781.

When was CVE-2026-50883 published?

CVE-2026-50883 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-50883

CVE-2026-50883 is a critical-severity vulnerability with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36781
Weakness: CWE-79
Published: 2026-06-15
Last modified: 2026-06-17

Description

An HTML injection vulnerability in the /src/highlight.rs component of matze wastebin v3.4.1 allows attackers to execute arbitrary scripts via a crafted payload.

Frequently asked questions

What is CVE-2026-50883?: An HTML injection vulnerability in the /src/highlight.rs component of matze wastebin v3.4.1 allows attackers to execute arbitrary scripts via a crafted payload.
How severe is CVE-2026-50883?: CVE-2026-50883 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-50883 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-50883?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-50883 have an EU (EUVD) identifier?: Yes. CVE-2026-50883 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36781.
When was CVE-2026-50883 published?: CVE-2026-50883 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://gist.github.com/pyuysig/eb74ae37c49d0383bedc08881c2493c4

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