CVE-2017-2885· NVD / CVE Program· CNA talos

An exploitable stack based buffer overflow vulnerability exists in the GNOME libsoup 2.58.

An exploitable stack based buffer overflow vulnerability exists in the GNOME libsoup 2.58. A specially crafted HTTP request can cause a stack overflow resulting in remote code execution. An attacker can send a special HTTP request to the vulnerable server to trigger this vulnerability.

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Published: Apr 24, 2018
Updated: Jun 16, 2026
EPSS: 23.5% · 98th percentile
CWE: CWE-787

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Action score

Plan

Add it to your regular patch cycle.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 7 / 30 · 23.5%

CNA vs NVD score

NVD: 9.8
CNA · talos: 9.8; agree

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

Vendor	Product	CPE
gnome	libsoup	cpe:2.3:a:gnome:libsoup
debian	debian linux	cpe:2.3:o:debian:debian_linux
redhat	enterprise linux desktop	cpe:2.3:o:redhat:enterprise_linux_desktop
redhat	enterprise linux server	cpe:2.3:o:redhat:enterprise_linux_server
redhat	enterprise linux server aus	cpe:2.3:o:redhat:enterprise_linux_server_aus
redhat	enterprise linux server eus	cpe:2.3:o:redhat:enterprise_linux_server_eus
redhat	enterprise linux server tus	cpe:2.3:o:redhat:enterprise_linux_server_tus
redhat	enterprise linux workstation	cpe:2.3:o:redhat:enterprise_linux_workstation

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

debian debian linux8.0
debian debian linux9.0
gnome libsoup2.58
redhat enterprise linux desktop7.0
redhat enterprise linux server7.0
redhat enterprise linux server aus7.4
redhat enterprise linux server eus7.4
redhat enterprise linux server eus7.5
redhat enterprise linux server tus7.4
redhat enterprise linux workstation7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (talos). Independent of NVD's CPE analysis and usually ahead of it.

GNOME libsoup
- 2.58affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Alpine:v3.3	libsoup	before 2.52.2-r1	2.52.2-r1
Alpine:v3.4	libsoup	before 2.54.1-r1	2.54.1-r1
Alpine:v3.5	libsoup	before 2.56.1-r0	2.56.1-r0
Alpine:v3.6	libsoup	before 2.58.2-r0	2.58.2-r0
Debian:12	libsoup2.4	before 2.56.1-1	2.56.1-1
Debian:8	libsoup2.4	before 2.48.0-1+deb8u1	2.48.0-1+deb8u1
Debian:9	libsoup2.4	before 2.56.0-2+deb9u1	2.56.0-2+deb9u1
openSUSE:Tumbleweed	libsoup	before 2.72.0-2.5	2.72.0-2.5
Red Hat:enterprise_linux:7::client	libsoup	before 0:2.56.0-4.el7_4	0:2.56.0-4.el7_4
Red Hat:enterprise_linux:7::client	libsoup-debuginfo	before 0:2.56.0-4.el7_4	0:2.56.0-4.el7_4
Red Hat:enterprise_linux:7::client	libsoup-devel	before 0:2.56.0-4.el7_4	0:2.56.0-4.el7_4
SUSE:Linux Enterprise Desktop 12 SP2	libsoup	before 2.54.1-5.3.1	2.54.1-5.3.1
SUSE:Linux Enterprise Desktop 12 SP3	libsoup	before 2.62.2-5.7.1	2.62.2-5.7.1
SUSE:OpenStack Cloud 6	libsoup	before 2.44.2-2.3.1	2.44.2-2.3.1

Same product

gnome: all records

Other highest-scoring records for the same primary product.

CVE-2019-17266libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because soup_ntlm_parse_challenge() in soup-auth-ntlm.c does no
40Plan
CVE-2018-12910The get_cookies function in soup-cookie-jar.c in libsoup 2.63.2 allows attackers to have unspecified impact via an empty hostname.
40Plan
CVE-2026-2369Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources
36Monitor
CVE-2026-5119Libsoup: libsoup: information disclosure via cleartext transmission of cookies during https tunnel establishment
32Monitor
CVE-2026-2436Libsoup: libsoup: denial of service via use-after-free in soupserver during tls handshake
32Monitor
CVE-2026-4271Libsoup: libsoup: denial of service via use-after-free in http/2 server
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
alpine:libsoup	2.52.2-r1 · Alpine:v3.3	Package registry (OSV)
debian:libsoup2.4	2.56.1-1 · Debian:12	Package registry (OSV)
opensuse:libsoup	2.72.0-2.5 · openSUSE:Tumbleweed	Package registry (OSV)
red hat:libsoup	0:2.56.0-4.el7_4 · Red Hat:enterprise_linux:7::client	Package registry (OSV)
red hat:libsoup-debuginfo	0:2.56.0-4.el7_4 · Red Hat:enterprise_linux:7::client	Package registry (OSV)
red hat:libsoup-devel	0:2.56.0-4.el7_4 · Red Hat:enterprise_linux:7::client	Package registry (OSV)
suse:libsoup	2.54.1-5.3.1 · SUSE:Linux Enterprise Desktop 12 SP2	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days-1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records