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Vulnerabilities

Vulnerability · CVE-2026-48294

Adobe Acrobat and Reader Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Published Aug 10, 2026 · catalog updated Aug 10, 2026 · Adobe Acrobat and Reader

Patch now

CVE-2026-48294 is in the CISA known-exploited catalog. Confirm Adobe Acrobat and Reader against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.21%
Remediation
Remediation guidance
Affected products
stated Acrobat and Reader · vendor Adobe Acrobat and Reader

Adobe Acrobat PDF Extension (Chrome) versions 26.5.2.2 and earlier are affected by a UXSS-class cross-origin data disclosure vulnerability. An attacker could exploit this vulnerability to gain access to data regarding the victim's session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated Acrobat and Reader<= 5.2.2
  • vendor Adobe Acrobat and Readerversion unspecified

How to fix CVE-2026-48294

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-48294 is in the CISA known-exploited catalog. Confirm Adobe Acrobat and Reader against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with Acrobat and Reader <= 5.2.2. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 1.21%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 10, 2026 · VulnCheck KEV

    Detected

    Adobe Acrobat PDF Extension (Chrome) versions 26.5.2.2 and earlier are affected by a UXSS-class cross-origin data disclosure vulnerability. An attacker could exploit this vulnerability to gain access to data regarding the victim's session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is cha

  2. Aug 10, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2026-48294

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-48294

    30-day exploitation probability 1.2%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2026-48294

    Adobe Acrobat PDF Extension (Chrome) versions 26.5.2.2 and earlier are affected by a UXSS-class cross-origin data disclosure vulnerability. An attacker could exploit this vulnerability to gain access to data regarding the victim's session. Exploitation of this issue requires user

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.