CVE-2026-34657
CVE-2026-34657 is a medium-severity vulnerability in Adobe C2pa with a CVSS 3.x base score of 5.5. 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-22.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-35844
- Weakness: CWE-22
- Affected product: Adobe C2pa
- Published:
- Last modified:
Description
CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could result in an arbitrary file system write. An attacker could leverage this vulnerability to write to unauthorized files or directories outside of intended restrictions. Exploitation of this issue requires user interaction in that a victim must extract a maliciously crafted file.
Frequently asked questions
- What is CVE-2026-34657?
- CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could result in an arbitrary file system write. An attacker could leverage this vulnerability to write to unauthorized files or directories outside of intended restrictions. Exploitation of this issue requires user interaction in that a victim must extract a maliciously crafted file.
- How severe is CVE-2026-34657?
- CVE-2026-34657 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2026-34657 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-34657?
- CVE-2026-34657 primarily affects Adobe C2pa. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-34657?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-34657 have an EU (EUVD) identifier?
- Yes. CVE-2026-34657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35844.
- When was CVE-2026-34657 published?
- CVE-2026-34657 was published on 2026-06-09 and last updated on 2026-07-23.
References
Affected products (2)
- cpe:2.3:a:adobe:c2pa:*:*:*:*:*:rust:*:*
- cpe:2.3:a:adobe:c2pa-web:*:*:*:*:*:node.js:*:*
More vulnerabilities in Adobe C2pa
- CVE-2026-48290 — High (CVSS 8.2): CAI Content Credentials is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in…
- CVE-2026-48439 — High (CVSS 7.5): CAI Content Credentials is affected by an Uncontrolled Resource Consumption vulnerability that could lead to…
- CVE-2026-48438 — High (CVSS 7.5): CAI Content Credentials is affected by a NULL Pointer Dereference vulnerability that could result in an application…
- CVE-2026-48352 — High (CVSS 7.5): CAI Content Credentials is affected by an Improper Input Validation vulnerability that could result in an application…
- CVE-2026-48351 — High (CVSS 7.5): CAI Content Credentials is affected by an Improper Input Validation vulnerability that could result in an application…
- CVE-2026-48295 — High (CVSS 7.5): CAI Content Credentials is affected by an Insufficiently Protected Credentials vulnerability that could result in…
All CVEs affecting Adobe C2pa →
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