CVE-2023-6601
Ffmpeg: hls unsafe file extension bypass in ffmpeg
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Ffmpeg: hls unsafe file extension bypass in ffmpeg
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
CVE-2023-6601- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-99, CWE-94
- Updated
- 2026-11-02
EUVDEUVD-2023-58824
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
EUVD-2023-58824- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wj7r-cv36-mxr3
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file...
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
GHSA-wj7r-cv36-mxr3- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-94, CWE-99
- Updated
- 2026-11-02
NVD
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
CVE-2023-6601- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-99, CWE-94
- Updated
- 2026-11-02
OSV
Ffmpeg: hls unsafe file extension bypass in ffmpeg
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
CVE-2023-6601- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-99
- Updated
- 2026-11-07
OSVDEBIAN-CVE-2023-6601
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
DEBIAN-CVE-2023-6601- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
Show 10 moreShow less
OSVJLSEC-2025-146
A flaw was found in FFmpeg's HLS demuxer
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
JLSEC-2025-146- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-6601
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
- Record
UBUNTU-CVE-2023-6601- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N - Updated
- 2026-11-06
OSVopenSUSE-SU-2026:10027-1 No score
ffmpeg-4-4.4.6-10.1 on GA media
These are all security issues fixed in the ffmpeg-4-4.4.6-10.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10027-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:10028-1 No score
ffmpeg-7-7.1.3-1.1 on GA media
These are all security issues fixed in the ffmpeg-7-7.1.3-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10028-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:20710-1 No score
Security update for ffmpeg-4
This update for ffmpeg-4 fixes the following issues:
Changes in ffmpeg-4:
-
CVE-2025-59728: Fixed out-of-bounds NUL-byte write when calculating the content path in handling of MPEG-DASH manifests (bsc#1251137).
-
CVE-2025-7700: Fixed a NULL Pointer Dereference in the ALS Decoder (bsc#1246790)
-
CVE-2024-36618: Fixed a integer overflow in AVI demuxer (bsc#1234020)
-
CVE-2023-6601: Fixed HLS Unsafe File Extension Bypass (bsc#1220545).
-
Update to release 4.4.6
- lavc/libx265: unbreak build for X265_BUILD >= 210
- ARM: vp9mc: Load only 12 pixels in the 4 pixel wide horizontal filter
- rtmpproto: Avoid rare crashes in the
fail:codepath in rtmp_open - avcodec/snow: Fix off by 1 error in run_buffer
- avcodec/mpegvideo_enc: Check FLV1 resolution limits
- Record
openSUSE-SU-2026:20710-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:21211-1 No score
Security update for ffmpeg-7
This update for ffmpeg-7 fixes the following issues
- CVE-2026-40962: inadequate CENC subsample bounds checks can lead to an integer overflow (bsc#1262237).
Changes for ffmpeg-7:
- Update to version 7.1.4:
- Codec, format, filter and various other bugfixes.
- lavc/aarch64: Fix addp overflow in ff_pred16x16_plane_neon_10
- swscale/output: Fix integer overflow in yuv2ya16_X_c_template()
- avformat/avformat: clear FFFormatContext packet queue when closing a muxer
- Record
openSUSE-SU-2026:21211-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:0198-1 No score
Security update for ffmpeg-4
This update for ffmpeg-4 fixes the following issues:
- CVE-2023-6601: Fixed HLS Unsafe File Extension Bypass (bsc#1220545).
- CVE-2025-63757: Fixed integer overflow in yuv2ya16_X_c_template() (bsc#1255392).
- Record
SUSE-SU-2026:0198-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:0229-1 No score
Security update for ffmpeg-4
This update for ffmpeg-4 fixes the following issues:
- CVE-2023-6601: Fixed HLS Unsafe File Extension Bypass (bsc#1220545).
- CVE-2025-63757: Fixed integer overflow in yuv2ya16_X_c_template() (bsc#1255392).
- Record
SUSE-SU-2026:0229-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:2444-1 No score
Security update for ffmpeg-4
This update for ffmpeg-4 fixes the following issues
Update to version 4.4.7:
- CVE-2023-6601: HLS Unsafe File Extension Bypass (bsc#1220545).
- CVE-2024-35366: FFmpeg n6.1.1 is Integer Overflow. The vulnerability exists in the parse_options function of sbgdec.c within the libavformat module. When parsing certain options, the software does not adequately validate the i (bsc#1234030).
- CVE-2025-1594: stack-based buffer overflow in function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of the component AAC Encoder (bsc#1237561).
- CVE-2025-9951: heap-based buffer overflow in jpeg2000dec (bsc#1249393).
- CVE-2025-10256: NULL pointer dereference in Firequalizer filter (bsc#1249431).
- CVE-2025-63757: accumulation of filtered pixel values can lead to an integer overflow (bsc#1255392).
- CVE-2026-30997: Denial of Service via out-of-bounds read (bsc#1262047).
- CVE-2026-40962: inadequate CENC subsample bounds checks can lead to an integer overflow (bsc#1262237).
- Record
SUSE-SU-2026:2444-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:2445-1 No score
Security update for ffmpeg-4
This update for ffmpeg-4 fixes the following issues
Update to version 4.4.7:
- CVE-2023-6601: HLS Unsafe File Extension Bypass (bsc#1220545).
- CVE-2024-35366: FFmpeg n6.1.1 is Integer Overflow. The vulnerability exists in the parse_options function of sbgdec.c within the libavformat module. When parsing certain options, the software does not adequately validate the i (bsc#1234030).
- CVE-2025-1594: stack-based buffer overflow in function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of the component AAC Encoder (bsc#1237561).
- CVE-2025-9951: heap-based buffer overflow in jpeg2000dec (bsc#1249393).
- CVE-2025-10256: NULL pointer dereference in Firequalizer filter (bsc#1249431).
- CVE-2025-63757: accumulation of filtered pixel values can lead to an integer overflow (bsc#1255392).
- CVE-2026-30997: Denial of Service via out-of-bounds read (bsc#1262047).
- CVE-2026-40962: inadequate CENC subsample bounds checks can lead to an integer overflow (bsc#1262237).
- Record
SUSE-SU-2026:2445-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ffmpegDebian:12 |
All versions, plus listed versions 7:5.1.3-17:5.1.3-27:5.1.4-0+deb12u17:5.1.5-0+deb12u17:5.1.6-0+deb12u1 Show 45 moreShow less7:5.1.7-0+deb12u17:5.1.8-0+deb12u17:5.1.9-0+deb12u17:6.0-17:6.0-27:6.0-37:6.0-47:6.0-57:6.0-67:6.0-77:6.0-87:6.0-97:6.1-17:6.1-27:6.1-37:6.1-47:6.1-57:6.1.1-17:6.1.1-27:6.1.1-37:6.1.1-47:6.1.1-57:7.0-17:7.0.1-17:7.0.1-27:7.0.1-37:7.0.1-47:7.0.1-57:7.0.2-17:7.0.2-27:7.0.2-37:7.1-17:7.1-27:7.1-37:7.1-47:7.1.1-17:7.1.2-17:7.1.3-17:8.0-17:8.0-27:8.0.1-17:8.0.1-27:8.0.1-37:8.1-17:8.1-2 |
None known |
ffmpegDebian:13 |
before 7:6.1-1 | 7:6.1-1 |
ffmpegDebian:14 |
before 7:6.1-1 | 7:6.1-1 |
FFMPEG_jllJulia |
before 6.1.1+0 | 6.1.1+0 |
FFplay_jllJulia |
before 7.1.0+0 | 7.1.0+0 |
ffmpeg-4SUSE:Linux Enterprise Module for Package Hub 15 SP7 From an advisory covering 2 CVEs |
before 4.4.6-150600.13.38.1 | 4.4.6-150600.13.38.1 |
ffmpeg-4SUSE:Linux Enterprise Workstation Extension 15 SP7 From an advisory covering 2 CVEs |
before 4.4.6-150600.13.38.1 | 4.4.6-150600.13.38.1 |
ffmpeg-4openSUSE:Leap 15.6 From an advisory covering 2 CVEs |
before 4.4.6-150600.13.38.1 | 4.4.6-150600.13.38.1 |
ffmpeg-4SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS From an advisory covering 2 CVEs |
before 4.4.6-150400.3.60.1 | 4.4.6-150400.3.60.1 |
ffmpeg-4SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS From an advisory covering 2 CVEs |
before 4.4.6-150400.3.60.1 | 4.4.6-150400.3.60.1 |
Show 18 moreShow less
| Package | Affected | Fixed |
|---|---|---|
ffmpeg-4SUSE:Linux Enterprise Server 15 SP4-LTSS From an advisory covering 2 CVEs |
before 4.4.6-150400.3.60.1 | 4.4.6-150400.3.60.1 |
ffmpeg-4SUSE:Linux Enterprise Server for SAP Applications 15 SP4 From an advisory covering 2 CVEs |
before 4.4.6-150400.3.60.1 | 4.4.6-150400.3.60.1 |
ffmpeg-4SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS From an advisory covering 11 CVEs |
before 4.4.7-150400.3.67.1 | 4.4.7-150400.3.67.1 |
ffmpeg-4SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS From an advisory covering 11 CVEs |
before 4.4.7-150400.3.67.1 | 4.4.7-150400.3.67.1 |
ffmpeg-4SUSE:Linux Enterprise Server 15 SP4-LTSS From an advisory covering 11 CVEs |
before 4.4.7-150400.3.67.1 | 4.4.7-150400.3.67.1 |
ffmpeg-4SUSE:Linux Enterprise Server for SAP Applications 15 SP4 From an advisory covering 11 CVEs |
before 4.4.7-150400.3.67.1 | 4.4.7-150400.3.67.1 |
ffmpeg-4SUSE:Linux Enterprise Module for Package Hub 15 SP7 From an advisory covering 11 CVEs |
before 4.4.7-150600.13.47.1 | 4.4.7-150600.13.47.1 |
ffmpeg-4SUSE:Linux Enterprise Workstation Extension 15 SP7 From an advisory covering 11 CVEs |
before 4.4.7-150600.13.47.1 | 4.4.7-150600.13.47.1 |
libavUbuntu:Pro:14.04:LTS |
All versions, plus listed versions 6:0.8.7-1ubuntu26:9.10-1ubuntu16:9.10-1ubuntu26:9.10-1ubuntu56:9.10-1ubuntu6 Show 9 moreShow less6:9.10-1ubuntu76:9.11-2ubuntu16:9.11-2ubuntu26:9.13-0ubuntu0.14.04.16:9.14-0ubuntu0.14.04.16:9.16-0ubuntu0.14.04.16:9.18-0ubuntu0.14.04.16:9.20-0ubuntu0.14.04.16:9.20-0ubuntu0.14.04.1+esm1 |
None known |
ffmpegUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 7:2.7.2-1build17:2.8.1-1ubuntu17:2.8.2-1ubuntu17:2.8.3-17:2.8.4-1 Show 31 moreShow less7:2.8.4-1ubuntu17:2.8.4-1ubuntu27:2.8.4-1ubuntu37:2.8.4-1ubuntu47:2.8.6-1ubuntu17:2.8.6-1ubuntu27:2.8.8-0ubuntu0.16.04.17:2.8.10-0ubuntu0.16.04.17:2.8.11-0ubuntu0.16.04.17:2.8.14-0ubuntu0.16.04.17:2.8.15-0ubuntu0.16.04.17:2.8.15-0ubuntu0.16.04.1+esm17:2.8.17-0ubuntu0.17:2.8.17-0ubuntu0.1+esm17:2.8.17-0ubuntu0.1+esm27:2.8.17-0ubuntu0.1+esm37:2.8.17-0ubuntu0.1+esm47:2.8.17-0ubuntu0.1+esm57:2.8.17-0ubuntu0.1+esm67:2.8.17-0ubuntu0.1+esm77:2.8.17-0ubuntu0.1+esm87:2.8.17-0ubuntu0.1+esm97:2.8.17-0ubuntu0.1+esm107:2.8.17-0ubuntu0.1+esm117:2.8.17-0ubuntu0.1+esm127:2.8.17-0ubuntu0.1+esm137:2.8.17-0ubuntu0.1+esm147:2.8.17-0ubuntu0.1+esm157:2.8.17-0ubuntu0.1+esm167:2.8.17-0ubuntu0.1+esm177:2.8.17-0ubuntu0.1+esm18 |
None known |
ffmpegUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 7:3.3.4-27:3.3.4-2build37:3.4-2ubuntu27:3.4-47:3.4-4build1 Show 25 moreShow less7:3.4.1-17:3.4.1-1build17:3.4.2-17:3.4.2-1build17:3.4.2-27:3.4.4-0ubuntu0.18.04.17:3.4.6-0ubuntu0.18.04.17:3.4.8-0ubuntu0.27:3.4.11-0ubuntu0.17:3.4.11-0ubuntu0.1+esm17:3.4.11-0ubuntu0.1+esm27:3.4.11-0ubuntu0.1+esm37:3.4.11-0ubuntu0.1+esm47:3.4.11-0ubuntu0.1+esm57:3.4.11-0ubuntu0.1+esm67:3.4.11-0ubuntu0.1+esm77:3.4.11-0ubuntu0.1+esm87:3.4.11-0ubuntu0.1+esm97:3.4.11-0ubuntu0.1+esm107:3.4.11-0ubuntu0.1+esm117:3.4.11-0ubuntu0.1+esm127:3.4.11-0ubuntu0.1+esm137:3.4.11-0ubuntu0.1+esm147:3.4.11-0ubuntu0.1+esm157:3.4.11-0ubuntu0.1+esm16 |
None known |
ffmpegUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 7:4.1.4-1build27:4.2.1-27:4.2.1-2ubuntu17:4.2.2-1build17:4.2.2-1ubuntu1 Show 21 moreShow less7:4.2.4-1ubuntu0.17:4.2.4-1ubuntu0.1+esm17:4.2.7-0ubuntu0.17:4.2.7-0ubuntu0.1+esm17:4.2.7-0ubuntu0.1+esm27:4.2.7-0ubuntu0.1+esm37:4.2.7-0ubuntu0.1+esm47:4.2.7-0ubuntu0.1+esm57:4.2.7-0ubuntu0.1+esm67:4.2.7-0ubuntu0.1+esm77:4.2.7-0ubuntu0.1+esm87:4.2.7-0ubuntu0.1+esm97:4.2.7-0ubuntu0.1+esm107:4.2.7-0ubuntu0.1+esm117:4.2.7-0ubuntu0.1+esm127:4.2.7-0ubuntu0.1+esm137:4.2.7-0ubuntu0.1+esm147:4.2.7-0ubuntu0.1+esm157:4.2.7-0ubuntu0.1+esm167:4.2.7-0ubuntu0.1+esm177:4.2.7-0ubuntu0.1+esm18 |
None known |
ffmpegUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 7:6.0-6ubuntu17:6.0-9ubuntu17:6.1-2ubuntu17:6.1-3ubuntu17:6.1-4ubuntu1 Show 17 moreShow less7:6.1-5ubuntu17:6.1.1-1ubuntu17:6.1.1-3ubuntu17:6.1.1-3ubuntu57:6.1.1-3ubuntu5+esm17:6.1.1-3ubuntu5+esm27:6.1.1-3ubuntu5+esm37:6.1.1-3ubuntu5+esm47:6.1.1-3ubuntu5+esm57:6.1.1-3ubuntu5+esm67:6.1.1-3ubuntu5+esm77:6.1.1-3ubuntu5+esm87:6.1.1-3ubuntu5+esm107:6.1.1-3ubuntu5+esm117:6.1.1-3ubuntu5+esm127:6.1.1-3ubuntu5+esm137:6.1.1-3ubuntu5+esm15 |
None known |
ffmpegUbuntu:25.10 |
All versions, plus listed versions 7:7.1.1-1ubuntu17:7.1.1-1ubuntu27:7.1.1-1ubuntu37:7.1.1-1ubuntu47:7.1.1-1ubuntu4.17:7.1.1-1ubuntu4.2 |
None known |
ffmpegUbuntu:26.10 |
All versions, plus listed versions 7:8.0.1-3ubuntu27:8.1-3ubuntu37:8.1.2-2ubuntu2 |
None known |
ffmpeg-4openSUSE:Tumbleweed |
before 4.4.6-10.1 | 4.4.6-10.1 |
ffmpeg-7openSUSE:Tumbleweed |
before 7.1.3-1.1 | 7.1.3-1.1 |
ffmpeg-7openSUSE:Leap 16.0 From an advisory covering 7 CVEs |
before 7.1.4-160000.1.1 | 7.1.4-160000.1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | OSV | |
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-6601 is a medium vulnerability (CVSS 4.7) in Ffmpeg, published January 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. Fixed in ffmpeg 7:6.1-1.
References
bugzilla.redhat.com/show_bug.cgi?id=2253172
lists.debian.org/debian-lts-announce/2025/07/msg00004.html
nvd.nist.gov/vuln/detail/CVE-2023-6601
github.com/advisories/GHSA-wj7r-cv36-mxr3
Show 56 moreShow less
security-tracker.debian.org/tracker/CVE-2023-6601
suse.com/support/update/announcement/2026/suse-su-20260198-1
bugzilla.suse.com/1220545
ubuntu.com/security/CVE-2023-6601
cve.org/CVERecord?id=CVE-2023-6601
Left out here: 13 versions. The JSON record has them.