Is CVE-2026-48863 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-48863 being exploited in the wild.

How severe is CVE-2026-48863?

High severity, with a CVSS score of 7.5, published 16 July 2026.

Which products and versions are affected?

Opensuse Libsolv 0.6.4 to 0.7.37; Red Hat Enterprise Linux 10 libsolv-0.7.33-2.el10.

Is there a fix for CVE-2026-48863?

A patch was published on 2026-05-26: Fixed in upstream libsolv commit 44f8c08 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-48863 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-48863?

Check whether you run Opensuse Libsolv or Red Hat Enterprise Linux 10 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-48863: OpenSUSE libsolv stack overflow in PGP EdDSA verification

CVE-2026-48863 · Severity: high · CVSS 7.5 · Published 2026-07-16

libsolv, a library used for managing software packages and repositories, contains a flaw in how it verifies digital signatures. An attacker could provide a specially crafted package or repository signature that causes the software to crash when it attempts to verify the authenticity of the data. This could lead to a denial of service, disrupting automated software updates and repository management workflows.

Technologies: Opensuse Libsolv, Red Hat Enterprise Linux 10. Vendors: Opensuse, Red Hat.

Quick answers

Is CVE-2026-48863 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-48863 being exploited in the wild.
How severe is CVE-2026-48863?: High severity, with a CVSS score of 7.5, published 16 July 2026.
Which products and versions are affected?: Opensuse Libsolv 0.6.4 to 0.7.37; Red Hat Enterprise Linux 10 libsolv-0.7.33-2.el10.
Is there a fix for CVE-2026-48863?: A patch was published on 2026-05-26: Fixed in upstream libsolv commit 44f8c08 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-48863 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-48863?: Check whether you run Opensuse Libsolv or Red Hat Enterprise Linux 10 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in `ext/solv_pgpvrfy.c` within the `solv_pgpvrfy()` function. The vulnerability is caused by using the incorrect length variable (`rlen` instead of `slen`) when copying the EdDSA 's' MPI into a fixed 64-byte stack buffer (`sigdata`). An attacker can trigger this by providing a crafted Ed25519 PGP signature where the 'r' MPI length is significantly larger than the 's' MPI length, leading to an out-of-bounds write of up to 31 bytes. This requires the library to be compiled with `ENABLE_PGPVRFY` and `ENABLE_PGPVRFY_ED25519`. The issue was fixed in upstream version 0.7.38.

Affected products

OpenSUSE libsolv 0.6.4 to 0.7.37
Red Hat Red Hat Enterprise Linux 10 libsolv-0.7.33-2.el10

Timeline

2026-04-23: disclosed: Reported to Red Hat Bugzilla
2026-05-26: patched: Fixed in upstream libsolv commit 44f8c08
2026-07-16: advisory: CVE published to NVD

References

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