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PatchSiren cyber security CVE debrief

CVE-2026-48294 Adobe CVE debrief

The Adobe Acrobat PDF Extension for Chrome, versions 26.5.2.2 and earlier, contains a UXSS-class cross-origin data disclosure vulnerability (CVE-2026-48294). This High-severity issue (CVSS score of 7.4) allows attackers to gain access to victim session data by exploiting user interaction, such as visiting malicious URLs or interacting with compromised web pages. Scope change occurs due to successful exploitation. Users and administrators should take immediate action to mitigate potential risks.

Vendor
Adobe
Product
Adobe Acrobat PDF Extension (Chrome)
CVSS
HIGH 7.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-29
Advisory published
2026-06-17
Advisory updated
2026-06-29

Who should care

Users of Adobe Acrobat PDF Extension for Chrome, particularly those with sensitive data access, should be aware of this vulnerability. IT administrators and cybersecurity teams responsible for managing browser extensions and protecting against user interaction-based threats should prioritize patching and mitigation efforts.

Technical summary

The vulnerability, tracked as CVE-2026-48294, affects Adobe Acrobat PDF Extension for Chrome versions 26.5.2.2 and earlier. It is classified as a UXSS-class cross-origin data disclosure issue. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N, indicating a High severity level. The vulnerability requires user interaction for exploitation, such as visiting a maliciously crafted URL or interacting with a compromised web page.

Defensive priority

High

Recommended defensive actions

  • Update Adobe Acrobat PDF Extension for Chrome to the latest version.
  • Restrict user access to sensitive data and web pages.
  • Implement robust browser extension management policies.
  • Conduct regular security audits and vulnerability assessments.
  • Educate users about safe browsing practices and potential risks.
  • Monitor for suspicious user interactions and anomalous behavior.
  • Consider implementing a Web Application Firewall (WAF) to detect and prevent attacks.

Evidence notes

The information provided is based on data from official sources, including the CVE record and NVD detail pages. The CVE was published on 2026-06-17T10:55:01.660Z and modified on 2026-06-17T16:58:37.447Z. The vulnerability affects Adobe Acrobat PDF Extension for Chrome versions 26.5.2.2 and earlier.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48294 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48294

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48294 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48294

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://chromewebstore.google.com/detail/adobe-acrobat-pdf-edit-co/efaidnbmnnnibpcajpcglclefindmkaj

    [email protected] - Product

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.