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VulnerabilityPublished

CVE-2026-8814: exifreader · Data Amplification

Affects exifreaderSource CVE Database V5

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Public exploit available · CVSS 6.9 Medium : upgrade to 4.39.0 as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.39.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade exifreader to 4.39.0.

Affected software

ProductAffectedFixed in
exifreaderAffected
  • <4.39.0
Fixed in
  • 4.39.0
npmexifreaderpkg:npm/exifreaderOther threatsAffected
  • <4.39.0
Fixed in
  • 4.39.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, users should consider disabling asynchronous parsing of PNG files or validating and sanitizing input files to prevent processing of maliciously crafted PNG zTXt chunks.

Description

CVE-2026-8814 affects versions of the exifreader package prior to 4.39.0. The vulnerability arises from improper handling of highly compressed PNG zTXt metadata, where the decompression process does not enforce a maximum decompressed output size. This can lead to data amplification, causing the library to consume excessive memory when parsing crafted PNG files asynchronously. The issue is classified under CWE-409 and has a CVSS 4.0 base score of 6.9, indicating medium severity. No known exploits are reported in the wild, and the vulnerability does not affect cloud services specifically.

References

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