How severe is CVE-2026-34258?

CVE-2026-34258 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-34258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34258?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34258 have an EU (EUVD) identifier?

Yes. CVE-2026-34258 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29368.

When was CVE-2026-34258 published?

CVE-2026-34258 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-34258

CVE-2026-34258 is a medium-severity vulnerability with a CVSS 3.x base score of 4.7. 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-451.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29368
Weakness: CWE-451
Published: 2026-05-12
Last modified: 2026-06-17

Description

SAPUI5 (Search UI) allows an unauthenticated attacker to manipulate specific URL parameters on the Search UI to include malicious content. Successful exploitation may mislead victim users into clicking and accessing attacker-controlled pages rendered by the application. This vulnerability has a low impact on confidentiality with no effect on the integrity and availability of the application.

Frequently asked questions

What is CVE-2026-34258?: SAPUI5 (Search UI) allows an unauthenticated attacker to manipulate specific URL parameters on the Search UI to include malicious content. Successful exploitation may mislead victim users into clicking and accessing attacker-controlled pages rendered by the application. This vulnerability has a low impact on confidentiality with no effect on the integrity and availability of the application.
How severe is CVE-2026-34258?: CVE-2026-34258 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-34258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-34258?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34258 have an EU (EUVD) identifier?: Yes. CVE-2026-34258 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29368.
When was CVE-2026-34258 published?: CVE-2026-34258 was published on 2026-05-12 and last updated on 2026-06-17.

References

Other CWE-451 vulnerabilities

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CVE-2026-0907 — Critical (CVSS 9.8): Incorrect security UI in Split View in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to perform UI…
CVE-2026-0906 — Critical (CVSS 9.8): Incorrect security UI in Google Chrome on Android prior to 144.0.7559.59 allowed a remote attacker to spoof the…
CVE-2025-8043 — Critical (CVSS 9.8): Focus incorrectly truncated URLs towards the beginning instead of around the origin. This vulnerability was fixed in…
CVE-2026-11175 — High (CVSS 8.8): Incorrect security UI in Messages in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker to…
CVE-2026-11172 — High (CVSS 8.8): Incorrect security UI in Contact Picker in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker to…

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