Resource exhaustion in Agamnentzar Ag-Psd
CVE-2026-63501
ag-psd is a JavaScript library for reading and writing Photoshop Document files. Prior to 31.0.3, readPsd() accepts a totalMemoryLimit for parsing untrusted PSD files, but decodeLayerImageData expects a differently named memoryLimit property and therefore passes an undefined limit to createImageDataBitDepth. An attacker who can supply a PSD to an application with layer decoding enabled can use attacker-controlled layer dimensions to trigger an allocation larger than the configured limit, causing process memory exhaustion and denial of service. The advisory also identifies inflateSync(compressed) decompressing ZIP-encoded channel data without an output-size cap, which can cause a similar denial of service through unbounded decompression. This vulnerability is fixed in 31.0.1.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Agamnentzar Ag-Psd — versions < 31.0.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-63501?
- CVE-2026-63501 is a high-severity vulnerability in Agamnentzar Ag-Psd, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-11-03.
- How severe is CVE-2026-63501?
- High severity. CVSS v3 base score is 7.5 out of 10.