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9.8
exiv2 may read or write past memory when handling remote images
published 29 days ago
Summary
The exiv2 image metadata library (versions 0.28.8 and earlier) can read outside its allocated memory and, in some cases, write beyond its buffer when processing images from a URL. This could let an attacker cause a crash or potentially execute code on systems that use the WebReady or Curl‑enabled builds, such as Alpine 3.24. Update exiv2 to a newer version or apply the vendor’s patch to stop the issue.
What to do
- Update openeuler exiv2 to version 0.27.5-8.oe2203sp4.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| openEuler:22.03-LTS-SP4 | openeuler | exiv2 |
< 0.27.5-8.oe2203sp4 Fix: upgrade to 0.27.5-8.oe2203sp4
|
Original advisory text
exiv2 security update
Exiv2 is a Cross-platform C++ library and a command line utility to manage image metadata. It provides fast and easy read and write access to the Exif, IPTC and XMP metadata and the ICC Profile embedded within digital images in various formats.
Security Fix(es):
Exiv2 has an out-of-bounds read vulnerability in the CrwMap::decodeBasic() function in versions 0.28.8 and earlier. This vulnerability was discovered by OSS-Fuzz and can be reproduced through the fuzz testing target, but currently cannot be reproduced through the exiv2 command line application. The affected Snyk trace is the exiv2 package in the Alpine 3.24 release (SNYK-ALPINE324-EXIV2-19432405).(CVE-2026-49275)
Exiv2 discovered a heap out-of-bounds write vulnerability in the RemoteIo::Impl::populateBlocks() function in versions 0.28.8 and earlier. The vulnerability is located in the RemoteIo class and is only triggered when Exiv2 handles a remote resource through a URL (not a local file), such as exiv2 https://dodgywebsite.com/poc.jpg. This vulnerability only affects WebReady or Exiv2 binaries built with Curl. The affected Snyk trace is the exiv2 package in the Alpine 3.24 release (SNYK-ALPINE324-EXIV2-19432403). Reported by zenniskayy2k4.(CVE-2026-68546)
Exiv2 discovered a heap out-of-bounds read vulnerability (off-by-one) in the RemoteIo::Impl::populateBlocks() function in versions 0.28.8 and earlier. The vulnerability is located in the RemoteIo class and is only triggered when Exiv2 handles a remote resource through a URL (not a local file), such as exiv2 https://dodgywebsite.com/poc.jpg. The root cause is related to reading a block-aligned remote CRW file. The affected Snyk trace is the exiv2 package in the Alpine 3.24 release (SNYK-ALPINE324-EXIV2-19432401). Reported by Mmandysa.(CVE-2026-68547)
Security Fix(es):
Exiv2 has an out-of-bounds read vulnerability in the CrwMap::decodeBasic() function in versions 0.28.8 and earlier. This vulnerability was discovered by OSS-Fuzz and can be reproduced through the fuzz testing target, but currently cannot be reproduced through the exiv2 command line application. The affected Snyk trace is the exiv2 package in the Alpine 3.24 release (SNYK-ALPINE324-EXIV2-19432405).(CVE-2026-49275)
Exiv2 discovered a heap out-of-bounds write vulnerability in the RemoteIo::Impl::populateBlocks() function in versions 0.28.8 and earlier. The vulnerability is located in the RemoteIo class and is only triggered when Exiv2 handles a remote resource through a URL (not a local file), such as exiv2 https://dodgywebsite.com/poc.jpg. This vulnerability only affects WebReady or Exiv2 binaries built with Curl. The affected Snyk trace is the exiv2 package in the Alpine 3.24 release (SNYK-ALPINE324-EXIV2-19432403). Reported by zenniskayy2k4.(CVE-2026-68546)
Exiv2 discovered a heap out-of-bounds read vulnerability (off-by-one) in the RemoteIo::Impl::populateBlocks() function in versions 0.28.8 and earlier. The vulnerability is located in the RemoteIo class and is only triggered when Exiv2 handles a remote resource through a URL (not a local file), such as exiv2 https://dodgywebsite.com/poc.jpg. The root cause is related to reading a block-aligned remote CRW file. The affected Snyk trace is the exiv2 package in the Alpine 3.24 release (SNYK-ALPINE324-EXIV2-19432401). Reported by Mmandysa.(CVE-2026-68547)
References
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-49275 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-68546 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-68547 Vendor Advisory
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker full control (estimated)
Timeline
Published20 Sep 2026
Updated20 Sep 2026
First seen20 Sep 2026
Sources
OESA-2026-3889 · OSV
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