CVE-2016-1231 [Medium] | Path Traversal in Fedora

CVE-2016-1231 is rated Moderate Risk (55.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.87%). EPSS rose +2.13% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.74%	2.87%	+2.13%
2	2025-07-04	0.81%	0.74%	-0.07%
3	2025-03-30	—	0.81%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.74%

2.87%

+2.13%

2025-07-04

0.81%

0.74%

-0.07%

2025-03-30

—

0.81%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.9	3.0	MEDIUM	`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	2.2	3.6	[email protected]
4.3	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	8.6	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.9

3.0

MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

2.2

3.6

[email protected]

4.3

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

8.6

2.9

[email protected]

OS Trackers for CVE-2016-1231

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2016-1231 not yet assigned priority: Debian including 1 source packages (prosody), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2016-1231
`ubuntu`	medium	CVE-2016-1231 medium priority: Ubuntu including 1 source packages (prosody), 8 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): released 4, not-affected 3, ignored 1.	https://ubuntu.com/security/CVE-2016-1231

Affected software / configurations for CVE-2016-1231

Vendor	Product	Version	Raw CPE
fedoraproject	fedora	22	cpe:2.3:o:fedoraproject:fedora:22:::::::*
fedoraproject	fedora	23	cpe:2.3:o:fedoraproject:fedora:23:::::::*
prosody	prosody	0.9.0	cpe:2.3:a:prosody:prosody:0.9.0:::::::*
prosody	prosody	0.9.1	cpe:2.3:a:prosody:prosody:0.9.1:::::::*
prosody	prosody	0.9.2	cpe:2.3:a:prosody:prosody:0.9.2:::::::*
prosody	prosody	0.9.3	cpe:2.3:a:prosody:prosody:0.9.3:::::::*
prosody	prosody	0.9.4	cpe:2.3:a:prosody:prosody:0.9.4:::::::*
prosody	prosody	0.9.5	cpe:2.3:a:prosody:prosody:0.9.5:::::::*
prosody	prosody	0.9.6	cpe:2.3:a:prosody:prosody:0.9.6:::::::*
prosody	prosody	0.9.7	cpe:2.3:a:prosody:prosody:0.9.7:::::::*
prosody	prosody	0.9.8	cpe:2.3:a:prosody:prosody:0.9.8:::::::*
debian	debian_linux	7.0	cpe:2.3:o:debian:debian_linux:7.0:::::::*
debian	debian_linux	8.0	cpe:2.3:o:debian:debian_linux:8.0:::::::*

References for CVE-2016-1231

URL	Tags
http://blog.prosody.im/prosody-0-9-9-security-release/	Patch Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175829.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175868.html
http://www.debian.org/security/2016/dsa-3439
http://www.openwall.com/lists/oss-security/2016/01/08/5
https://prosody.im/issues/issue/520
https://prosody.im/security/advisory_20160108-1/	Vendor Advisory

URL

CVE-2016-1231

Exploit prediction scoring system (EPSS) score for CVE-2016-1231

Common vulnerability scoring system (CVSS) metrics for CVE-2016-1231

Weakness enumeration for CVE-2016-1231

OS Trackers for CVE-2016-1231

Affected software / configurations for CVE-2016-1231

References for CVE-2016-1231